NA1 Air Circuit Breaker
Contents
1.2. Min18 i a fan 413 4 pole ferreous material Yi N Rana p mu e qui amm a 493 4 pole 318 3 pole ll a LL eee ere ee InA amm a 630 10 378 3 pole 20 ES o2 02 9 OT 800 1600 15 Pe bru c 2000 2500 2000 20 K 3200 30 t la _ ak x 1508 WE A 8 013 Ss Me E aps RT N pole pa IE PET o c a5 ed Lele S mm RI O s m 2 SQ Tn ai i o e 7 l 5 95 95 95 ws ms us t eA al Pargi eA al 290 SI Horizontal Oe d m 2 Horizontal E 359 JE ME 0 ti a poi WIE SEIS 400 3 pole eer Bee 515 4 pole es 8 Pid 435 4 pole 4 012 D 4 012 Bi 2 o ex h S S S M 362 li S i 400 3 i i i S 3 pole Installation hole on b L 340 4 pole Installation hole on S l 515 4 pole Right amp outer side E A 435 4 pole Right amp outer side installation hole o of breaker 8 4 5 right side of breakel 15 of breaker 8 0 5 right side of break 404 r 342 2 95 Installation panel Wertical Installation panel a l Opening hole on panel Opening hole on panel Vertical NA1 3200 Drawerout type NA1 4000 Drawerout type 3 pole 45 Disconnected position 45 Disconnected position xan E 528 4 pole ES zs 413 3 pole In A A mm Q s F j 2000 2500 20 A E P r 3200 30 E S al 16 013 J m e 9 co E E m 71 SI N pole 5q HIS gt Ec QUY iS N A ZA n x MN E EM 8 z d 2
3. 45 Disconnected position 928 4 pole B 813 3 pole 9 3 i i rr id i ZR Ae PT Q83 d 2 i nien 4 10 97 175 A E meum ae aie Tes amt aM 352 835 3 pole 950 4 pole ae Nepale 28 015 I al 135 155 210 S j 7 3 Pon 2 R 4 ot bl qose odieo dolos a a S 362 Se 2 l h l T l PPE l 4 L m Sa Wy S Z d MENU A e m 2 10 x17 rd EMI 3 G aa 182 247 247 T i Right Souter side 0 reaker iA 11 057 eee ie 175 33a AoA Installation panel Right amp outer side of breaker Opening hole on panel TSTS OT R METRE ty ex 110vt 9 O puo Intelligent release power 1 connect positive pole and 2 connect negative pole for direct current SB1 Shunt button SB2 Under voltage button SB3 Making button SA Travel switch NA1 6300 In 6300A Drawerout type 3 pole Q Under voltage release or under voltage time delay release F Shunt release X Closing electromagnet M Energy storage motor XT Connection terminal EN 45 Disconnected position E 928 A Q e i S 3 r gt a Note If control voltage of Q F X is different from each other they can be connected to different power If model ST intelligent X Eu Al e release is DC it must pass through U1 and U2 before directly connected to terminal 1 or 2 Circuit explanation for signal E gd N 4 output 1 N i sl Y id a a Broken line parts shall be provided by customers 1 E
4. e controller Communication type H e e 9 e 8 e Electrical life 500 500 R ieee mane Non maintenance 2500 Non maintenance 2500 Connection pattern Maintenance 10000 Horizontal Vertical Maintenance 10000 Horizontal Vertical 24 Forbid making the power for long time to avoid being damaged 9 2 Under voltage release power supply must be connected before circuit breaker s connection Users can select it or not up to your needs Under voltage release is used to break circuit breaker and protect the equipment suchas motor when under voltage or voltage failure happens or automatically break the under voltage circuit of power supply system improves the reliability and safety such as dualcircuit Itis classified into instantaneous and time delay type Delay time of under voltage time delay release is classified into fourtypes of 1s 3s 5sand 7s andtheaccuracy is 15 Within 1 2 time delay range circuit breaker does not break when power voltage recovers and exceeds 85 Ue Characteristic Rated control power voltage Us V Work voltage V Reliable breaking voltage V Reliable non breaking voltage V Power loss AC400 230 127 0 35 0 7 Ue 0 85 1 1 Ue lt 0 35Ue 48VA W Close the circuit before operating the circuit breaker DC 220 110 NAT ChNT NA1 Air Circuit Breaker 9 3 Closing electromagnet electrifying timeis no morethan 1s time and electri
5. rS css Htm ees t gm S p L QF Circuit breaker NA1 To T03 busbar 1 ene AH FUI 2 Fuse RT14 20 10A fibus ee SB1 2 Button LA18 22 Each one for red and green 1213 1473 IS HIS YEHL Signal indicator AD11 25 230V Yellow Device IE e GNHL Signal indicator AD11 25 230V Green T S WA ES ea E e ee ees PU PLI S E es RDHL Signal indicator AD11 25 230V Red to the incoming line side DO24B024VCOM EM S 3 z MOCO RT PE Un U1 U2 U3 BO pog DA Number inside the broken line circle is the terminal number on terminal block of NAI body Tensioner I UTT Nal Inner components Red Green E us Q Under voltage coil 400V 2 4 Le Ls 1o 2 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 I I F Shunt coil 230V A A IN IN AN N NEA N N YA X Closing electromagnetic 230V M Energy storage motor 230V Q F x x pe i m SA Motor limit switch E M 9 Dual receiving circuit auto switching operation circuit visite GI CC A e 1 E8 Es E 7 9 potis 15 17 19 E21 23 27 29 33 33 35 37 39 41 43 45 47 E l8 N OO try 69 69 storage OpenT Close i i energy ener dls ee Intelligent controller with auxiliary function Wanta m NT EN auxiliary switch y HZR Moe 1 2 Auxiliary power input 12 Overload pre alarm signal output eens 13 M is wireless H is open signal 14 M is short circuit tripping signal H is closing signal T ASENA 15 M i
6. 0 8 12 1 15 11 25 18 75 1 6 24 2 30 2 30 2 5 37 7 3 2 48 3 2 48 4 60 4 60 5475 6 3 94 5 NMgs 125 9 0 48 motor 0 6624 6 0 6624 9 45 0 8 12 115 1 25 18 75 1 6 24 2 30 2 30 2 5 37 7 3 2 48 3 2 48 4 60 4 60 5 75 6 3 94 5 0 50 0 69 6 0 69 9 45 0 8 12 l 15 11 25 18 75 1 6 24 2 30 2 30 2 5 37 7 3 2448 3 2 48 4 60 4 60 5 75 6 3 94 5 x 0 60 motor 0 828 6 0 828 9 45 0 828 12 1 15 1 25 18 75 1 6 24 2 30 2 30 25 377 32 48 3 2 48 4 60 4 60 5 75 6 3 94 5 0 63 0 8694 6 0 8694 9 450 8694 12 1 15 1 25 18 75 1 6 24 2 30 2 30 2 5 37 7 3 2 48 3 2 48 4 60 4 60 5 75 6 3 94 5 0 75 motor 1 035 6 1 035 9 45 1 035 12 1 035 15 1 25 18 75 1 6 24 2 30 2 30 2 5 37 7 3 2448 3 2 48 4 60 4 60 5 75 6 3 94 5 0 80 1 104 6 1 104 9 45 1 104 121 1 104 15 1 25 18 75 1 6 24 2 30 2 30 D5 377 32e 3 2 48 4 60 4 60 5 75 6 3 94 5 a 0 96 motor 1 325 6 1 325 9 45 1 325 12 1 325 15 1 325 18 75 1 6 24 2 30 2 30 25377 32A 3 2 48 4 60 4 60 5 75 6 3 94 5 1 0 1 38 6 1 38 9 45 1 38 12 1 38 15 1 38 18 75 1 6 24 2 30 2 30 2 5 37 7 3 2 48 3 2 48 4 60 4 60 5 75 6 3 94 5 m 1 20 motor 1 656 6 1 656 9 45 1 656 12 1 656 15 11 656 18 75 1 656 24 2 30 2 30 2 5 37 7 3 2 48 3 2 48 4 60 4 60 5 75 6 3 94 5 NI 1725 96115252945 e725 23211907257 15725 518 75 11725524 1 725 30 1 725 30 1 725 37 7 1 725 48 1 725 48 15225560 1 725 60 13225275 11922559455 ds 1 5 motor 207 6 2 07 9 45 207 12 207215 1207 1875 207 24 207 0 207 30 207 377 207 485
7. Function of monitoring self diagnosis 3 Function of setting load Not items to be selected 1 Ir protection for overload long time delay Ir2 definite time delay protection 2 Z oH type for short circuit short delay Ir3 instantaneous protection for short circuit ii Sains N as necessarily cost of the Z Communication 4 section protection for single phrase earthing K play increased will be calculated 2 WA 2 Ir1 protection for overload long time delay Ir2 inverse time protection additionally E bulanan definite time delay protection for short circuit short time delay Ir3 instantaneous Q protection for short circuit 4 section protection for single phrase earthing et o K Explanation Available set range of Ir1 long delay current 0 4 1 In Conventional setting before delivery overload long time delay 1 0In Availableset Available set range of operating time with overload 1 5In 15 30 60 480s Conventional setting before delivery overload 1 5In operating 15s rangeof protection Conventional setting before delivery short time delay current Sir functionand Available set range of current of Ir2 short delay Operating time of short delay 0 1 0 4s T Conventional setting before delivery operating time of short time delay 0 4s 0 1 0 4s conventional Available set range of Ir3 instantaneous current 1 0 In 50kA 75kA 100kA settingbefore delivery Conventional s
8. i ils 10 97 175 eal 2 R al aa al Vil Jus 125 125 Ja s ias 9 7 10 97 175 ERU rf H X e E 536 d L Horizontal 494 352 435 3 pole S per E M 550 4 pole S n S S T N af Lo un af i g my 4 2 S o col a i ele ddd ole Sl 2 LO o oll LO 6n i i E E 362 v S ex 362 ae Re E F XV C Qo sl a AK i F z 2 11x17 lt o He 7 S 2 S 12 013 2 e E 2 015617 S 150 A i Right amp outer A Right amp outer _140 a 11 05 202 e of breaker 202 side of breaker A UR aca 15 5 in 11 05 15 5 197 5 L 197 5 404 AA 125 LA 175 ANA cm arm Installation panel z casa raen Right amp outer side of breaker L ese Vertical Right amp outer Opening hole on panel side of breaker Opening hole on panel 10 aliis NAI Air CHNT Circuit Breaker WAO NAA YA WO UNA Secondary circuit wiring and maintenance
9. 0412 11 04 15 11 04 18 75 11 04 24 11 04 30 11 04 30 11 04 37 7 11 04 48 11 04 48 11 04 60 11 04 60 11 04 75 11 04 94 5 NM8s250 900 9 6 motor 13 2515 13 25 18 75 13 25 24 13 25 30 13 2530 13 25 37 7 13 25 48 13 25 48 13 25 60 13 25 60 13 25 75 13 25 94 5 10 13 8 15 13 8 18 75 13 8 24 13 830 13 8430 13 8 37 7 138 48 13 8 48 13 860 138 60 138 75 13 8 94 5 ba 12 motor 16 56 18 75 16 56 24 16 56 30 16 56 30 16 56 37 7 16 56 48 16 56 48 16 56 60 16 56 60 16 56 75 16 56 94 5 12 5 17 25 18 75 17 25 24 17 25 30 17 25 30 17 25 37 7 17 25 48 17 25 48 17 25 60 17 25 60 17 25 75 17 25 94 5 ne 15 0 motor 20 7 24 20 7 30 20 7 30 20 7 37 7 20 7 48 20 7 48 20 7 60 20 7 60 20 7 75 20 7 94 5 34 35 NAI Air Circuit Breaker ChNT 15 2 Selective protection in NAI Circuit breaker NA1 2000 NA1 3200 NA1 4000 NA1 6300 Rated 400 630 800 1000 1250 1600 2000 2000 2500 3200 3200 4000 4000 5000 6300 current A peruipsttingradngse Ii lS 04 64 8 10 16 16 20 2E 356 32 32 40 50 4 ofshorttime delay8ln kA S S s Downstream Upstream Setting 0 4 60 63 9 45 0 8 12 1 15 125218 75 2 30 2430 2 5 37 7 3 2 48 3 2 48 4 60 4 60 5 75 6 3 94 5 range kA DEBY dipping Loz 03 014 0 1 0 2 0 3 0 4 time s Returnable time 0 06 0 14 0 23 0 35 0 06 0 14 0 23 0 35 Frame size Rat
10. 4 NA1 1000 630 30x10 28 8 NAT NMS 3x400 578 14 4 28 8 NA1 1000 630 43 2 1x500 722 18 18 NA1 1000 800 18 2x500 722 18 18 NA1 1000 800 244025 36 1 NA1 NMS 3x500 722 18 36 1 NA1 1000 800 54 1 1x630 910 22 7 22 7 NA1 1000 1000 22 7 2x630 910 22 7 22 7 NA1 1000 1000 2x50X5 44 5 NA1 NMS 3x630 910 22 7 44 5 NA1 2000 1000 67 2 1x800 1154 19 3 19 3 NA1 2000 1250 19 3 2x800 1154 19 3 19 3 NA1 2000 1250 3X50x5 38 5 NAI NMS 3x 800 1154 19 3 38 5 NA1 2000 1250 57 8 1x 1000 1444 24 24 NA1 2000 1600 24 21000 1444 24 24 NA1 2000 1600 2x60x10 48 1 NAT NMS 3x1000 1444 24 48 1 NA1 2000 1600 72 1 1x1250 1805 30 30 NA1 2000 2000 30 241250 1805 30 30 NA1 2000 2000 2x 80X10 60 1 NA1 NMS 31250 1805 30 60 1 NA1 2000 2000 90 1 1x 1600 2310 36 5 36 5 NA1 3200 2500 36 5 241600 2310 36 5 36 5 NA1 3200 2500 2x100x10 73 NAT NMS 3x1600 2310 36 5 73 NA1 3200 2500 109 5 1x 2000 2887 48 2 48 2 NA1 3200 3200 48 2 2x 2000 2887 48 2 48 2 NA1 3200 3200 2x120x10 96 3 NAI NMS 3x2000 2887 48 2 96 3 NA1 3200 3200 144 5 1x2500 3608 60 60 NA1 4000 4000 iat Bann 60 NAI NM8 2x2500 3608 60 60 NA1 4000 4000 120 1x3150 4550 75 8 75 8 NA1 6300 5000 E pao 75 8 NA1 NM8 243150 4550 75 8 75 8 NA1 6300 5000 151 6 230 zd CHNT NAI Air Circuit Breaker 15 Selectivity protection 15 1 Selective protection between NM8 and NAI Circuit breaker NA1 2000 NA1 3200 NA1 4000 NA1 6300 Rated current 400 630
11. 690V and rated service current up to 6300A It is mainly used to distribute electric energy and protect circuits and power supply equipment from over load under voltage short circuit and single phase earthing With intelligentized and selective protection functions the breaker can improve the reliability of power supply and avoid unnecessary power failure The breaker is applicable for power stations factories mines for 690V and modern high buildings especially for the distribution system of intelligent building 1 2 Standard IEC EN60947 2 1 3 Certifications CB PCT RCC KEMA SEMKO Type Designation 2 1 Type Designation NA 1 a Number of poles Frame size rated current Design number enterprise Air circuit breaker Enterprise Code 2 2 Environment conditions for operation Environmental temperature Temperature condition 5 C 40 C the average value within 24h shall not exceed 35 C Special situation excluded 2 3 Elevation Altitude of installation place shall not exceed 2000m Atmosphere condition Relative humidity at 40 C shall not exceed 50 Higher humidity is permissible at lower temperature condition When the highest monthly average relative humidity is 90 in the humiddest month the lowest monthly average temperature of this month is 25 C And consider the influence of dew on product surface due to temperature changes Pollution grade grade III The breaker should be installed acco
12. 800 1000 1250 1600 2000 2000 2500 3200 3200 4000 4000 5000 6300 Default setting ratings 32 5 04 6 4 8 10 16 16 20 25 6 25 6 32 32 40 50 4 of short time delay 8In kA Downstream Upstream Setting jane 0 4 6 0 63 9 45 0 8 12 1 415 11 25 18 75 2 30 2 30 2 5 37 7 3 2 48 3 2 48 4 60 4 60 5 75 6 3 94 5 Delayed ES 0 1 0 2 0 3 0 4 Co 02 a time s Returnable time 0 06 0 14 0 23 0 35 0 06 0 14 0 23 0 35 Frame size Rated Instantaneous rated currentcurrent A setting ratings kA 0 16 0 4 6 0 63 9 45 0 8 12 1 15 1 25 18 75 1 6 24 2 30 2 30 2 5 37 7 3 2 48 3 2 48 4 60 4 60 5 75 6 3 94 5 0 19 motor 0 4 6 0 63 9 45 0 8 12 1 15 1 25 18 75 1 6 24 2 30 2 30 2 5 37 7 3 2 48 3 2 48 4 60 4 60 5 75 6 3 94 5 0 2 0 4 6 0 63 9 45 0 8 12 1 15 1 25 18 75 1 6 24 2 30 2 30 2 5 37 7 3 2 48 3 2 48 4 60 4 60 5 75 6 3 94 5 2x 0 24 motor 0 4 6 0 63 9 45 0 812 LTR 05255 18 75 1 6 24 2 30 2 30 25377 oe 48 3 2 48 4 60 4 60 5 75 6 3 94 5 0 25 0 4 6 0 63 9 45 0 8 12 1 15 1 25 18 75 1 6 24 2 30 2 30 2 5 37 7 3 2 48 3 2 48 4 60 4260 5275 6 3 94 5 idi 0 30 motor 0 414 6 0 63 9 45 0 8 12 1415 11 25 18 75 1 6 24 2 30 2 30 2 5 37 7 3 2448 3 2 48 4 60 4260 5 75 6 3 94 5 0 32 0 4416 6 0 63 9 45 0 8 12 1515990 01025531825 1 6 24 2 30 2 30 2 5 37 7 3 2 48 3 2 48 4 60 4 60 5 75 6 3 94 5 2s 0 38 motor 0 5224 6 0 63 9 45 0 8 12 lel 11 25 18 75 1 6 24 2 30 2 30 205332 TE Wess 3 2 48 4 60 4 60 5 75 6 3 94 5 NM8 125 0 40 0 552 6 0 63 9 45
13. Environmental NA1 3200 4400 NA1 2 NAI 4200 Standard temperature 000 NA1 4000 6300 G S 40 C 630 800 1000 1250 1600 2000 2000 2500 3200 4000 4000 5000 6300 3800 Z5 630 800 1000 1250 1600 1900 2000 2400 3000 3800 4000 5000 6000 40 45 50 55 60 65 70 WA O27 50 C 630 800 1000 1250 1500 1900 2000 2300 3000 3600 4000 5000 5600 Environmental temperature C 55C 630 800 1000 1200 1500 1800 2000 2200 2800 3400 4000 4800 5400 NA1 6300 60 C 610 800 1000 1150 1300 1700 2000 2200 2800 3200 4000 4800 5200 65 C 610 800 1000 1150 1300 1650 2000 2200 2600 3200 4000 4800 5100 E EN EB CHNT NAI Air Circuit Breaker 14 Coordination recommendations Capacity of transformer Rated current Short circuit current Breaking capacity of Type of air circuit Number and area of the Breaking capacity of PIT kVA amp parallelly of transformer of main circuit air circuit breaker for breaker for busbar for main circuit air circuit breaker zur carus breaker connected number In A kA main circuit kA main circuit nXWXT for branch circuit kA for branch circuit 1x250 360 9 9 NA1 1000 400 9 2x250 360 9 9 NA1 1000 400 240mm 18 5 NA1 NMS 3x250 360 9 18 5 NA1 1000 400 27 5 1X315 455 11 4 11 4 NA1 1000 630 11 4 2x315 455 11 4 Tres NA1 1000 630 300mm 227 NA1 NMS 3x315 455 11 4 2207 NA1 1000 630 34 1 1x400 578 14 4 14 4 NA1 1000 630 14 4 2x 400 578 14 4 14
14. electric energy Maintenance function Test function Inspecting and memorizing faults function Self diagnosis function Equivalent of contactor Recording historical parameter of power network Others functions Monitoring load function MCR ON OFF function Output of signal touch points function Zone selectivity interlocking ZSI function Communication function Standard type J 4l J Ji 2 O Iei O Communication type J K J J 2 OWL E NDIO ELO Note 4 means basic function O means optional function ed 9 CHNT NAI Air Circuit Breaker 7 1 Standard type model M 7 1 1 Basic functions a Over load long inverse time delay protection b Short inverse time delay or definite time delay protection c Instantaneous protection d Earthing fault protection e Query function f Parameter setting function g Test function 7 1 2 Selective function a load monitor function b making current release MCR c signal alarm function details are in user manual 7 2 Communication type Model H communication has one more function of communication than the standard 7 2 Basic functions a Over load long inverse time delay protection b Short inverse time delay or definite time delay protection c Instantaneous protection d Earthing fault protection e Ampere meter function f Self check g Setting h Test i Monitoring with load j Display 7 2 2 selective functions a Voltage b Frequency c Power
15. separated position and handle can t be rotated any longer pull out the handle and firmly grasp the aluminum handle on drawer base pull out the breaker body and remove it form the base then move the base from the soleplate and clean up the dirty things inside the drawer base Possible positions 4 1 2 Check the insulation resistance with a 500V megger resistance should not be less than 20M 9 when ambient temperature is 20 C 5 Cand relative humidity is 5096 7096 Otherwise dry it 4 1 3 Power supply NAI devices can be supplied either from the top or from the bottom without reduction in performance in order to facilitate connection when installed in a switchboard 4 1 4 Put the breaker fixed type or drawer base drawout type into the installation bracket and make it fixed directly connect the cable wire of main circuit to the bus wire of fixed type circuit breaker Alternatively put breaker body onto the slideway of drawer base Plug the handle into installation hole clockwise turns it until the under part of drawer base points at the connection position and click sound is heard It indicates that breaker body has been connected to its place then connect the cable of main circuit to drawer base Mounting the circuit breaker It is important to distribute the weight of the device uniformily over a rigid mounting surface such as rails or a base plate This mounting plane should be perfectly flat tolerance on support flatness 2 mm Thi
16. to reclose the breaker Tripping of S eauneelng part Rond en circuit breaker 1 Check the breaking current value and acting time of intelligent release BS e cen Earthing fault tripping 2 Exclude the earthing fault if that happens IG indicator flashing 3 Match the fault current setting value with the actual protection Main body 4 Pressthe reset button to reclose the breaker Drawer seat Under voltage release fault 1 Check the power is on or not 1 Rated working voltage is 2 Check the power voltage of under voltage release it shouldn t be less less than 70 Ue than 85 Ue 2 Fault of control unit 3 Replace the control unit of under voltage release Mechanical interlock acting Check the working state of two circuit breakers fixed with mechanical interlock Intelligent release don t reset panel is raised Press the reset button to reclose the breaker Handle Slideway Secondary circuit or drawerout Make the breaker to making position type breaker isn t connected click sound will be heard Check the secondary circuit Making the secondary circuit power the motor driven mechanism can store energy automatically until hearing the click and energy The breaker Breaker hasn t stored energy f1 power voltage of motor shouldn t less than 8596Ue stored indicating on the panel Otherwise press the storage handle for 6 times until hearing the click and the indicator display can t be 2 Check the storage mechanism replace it if necessary energy stor
17. 15 552 1875 5 52 24 5 52430 5 52 30 5 52 37 7 5 52 48 5 52 48 5 52 60 5 52 60 5 52 75 6 3 94 5 AEN 4 8 motor 6 624 9 45 6 624 12 6 624 15 6 624 18 75 6 624 24 6 624 30 6 624 30 6 624 37 7 6 624 48 6 624 48 6 624 60 6 624 60 6 624 75 6 624 94 5 5 0 6 9 9 45 6 9 12 6 9 15 6 9 18 75 6 9 24 6 9 30 6 9 30 6 9 37 7 6 9 48 6 9 48 6 9 60 6 9 60 6 9 75 6 9 94 5 i 6 0 motor 8 28 9 45 8 28 12 828 15 8 28 18 75 8 28 24 8 28 30 8 28 30 8 28 37 7 8 28 48 8 28 48 8 28 60 8 28 60 8 28 75 8 28 94 5 TES 6 3 8 694 9 45 8 694 12 8 694 15 8 694 18 75 8 694 24 8 694 30 8 694 30 8 694 37 7 8 694 48 8 694 48 8 694 60 8 694 60 8 694 75 8 694 94 5 7 56 motor 10 44 12 10 44 15 10 44 18 75 1044 24 10 44 30 10 44 30 10 44 37 7 10 44 48 10 44 48 10 44 60 10 44 60 10 44 75 10 44 94 5 6 3 8 694 9 45 8 694 12 8 694 15 8 694 18 75 8 694 24 8 694 30 8 694 30 8 694 37 7 8 694 48 8 694 48 8 694 60 8 694 60 8 694 75 8 694 94 5 2 7 56 motor 10 44 12 10 44 15 10 44 18 75 10 44 24 10 44 30 10 44 30 10 44 37 7 10 44 48 10 44 48 10 44 60 10 44 60 10 44 75 10 44 94 5 7 0 9 66 12 9 66 15 9 66 18 75 9 66 24 9 66 30 9 66 30 9 66 37 7 9 66 48 9 66 48 9 66 60 9 66 60 9 66 75 9 66 94 5 ox 8 4 motor 1059212 E ET LR T 118 75 11 59 24 11 59 30 11 59 30 11 59 37 7 11 59 48 11 59 48 11 59 60 11 59 60 11 59 75 11 59 94 5 NM8 1250 8 0 11
18. 207 48 207 600 2107 60 207 75 15210259415 1 0 1 38 6 1 38 9 45 1 38 12 1 38 15 1 38 18 75 1 6 24 2 30 2 30 2 5 37 7 3 2448 3 2 48 4 60 4 60 5475 6 3 94 5 bas 1 2 motor 1 656 6 1 656 9 45 1 656 12 1 656 15 1 656 18 75 1 656 24 2 30 2 30 2 5 37 7 3 2 48 3 2 48 4 60 4 60 5 75 6 3 94 5 io 2 208 6 2 208 9 45 2 208 12 2 208 15 2 208 18 75 2208 24 7 208 30 2 208 30 25237711 33 0548 3 2 48 4 60 4 60 5 75 6 3 94 5 NM8 250 is 1 92 motor 2 65 6 2 65 9 45 2 65 12 2 65 15 2 65 18 75 2 65 24 2 65 30 2 65 30 2 65 37 7 3 2 48 3 2 48 4 60 4 60 5 75 6 3 94 5 NM8S 250 2 0 2 76 6 2 76 9 45 2 76 12 2 76 15 2 76 18 75 2 76 24 2 76 30 2 76 30 2 76 37 7 3 2 48 3 2 48 4 60 4 60 5 75 6 3 94 5 a 2 4 motor 3 312 6 3 312 9 45 3 312 12 3 312 15 B 312 18 75 3 312 24 3 312 30 3 312 30 3 312 37 7 3 312 48 3 312 48 4 60 4 60 5 75 6 3 94 5 2 5 3 45 6 3 45 9 45 3 45 12 3 45 15 3 45 18 75 3 45 24 3 45 30 3 45 30 3 45 37 7 3 45 48 3 45 48 4 60 4260 5275 6 3 94 5 Qi 3 0 motor 4 1426 4 1449 45 4 14412 4 14415 4 14 18 75 41145247 4 14230 414 30 414 377 4414348 414248 74 14 60 4 14260 5 75 6 3 94 5 X um 2394 CHNT NAI Air Circuit Breaker Circuit breaker NA1 2000 NA1 3200 NA1 4000 NA1 6300 Rated Bar 400 630 800 1000 12
19. 50 1600 2000 2000 2500 3200 3200 4000 4000 5000 6300 Defaultsettingratings Errem E 2 5 04 6 4 8 10 16 16 20 25 6 25 6 32 32 40 50 4 Downstream Upstream Setting Pae 0 4 6 0 63 9 45 0 8 12 1 15 1 25 18 75 2 30 2 30 252377 3 2 48 3 2 48 4 60 4 60 5 75 6 3 94 5 Delaye ditrp ping 0 1 0 2 0 3 0 4 0 1 0 2 0 3 0 4 time s Returnable time 0 06 0 14 0 23 0 35 0 06 0 14 0 23 0 35 Frame size Rated Instantaneous rated current current A settingratings kA 2 5 3 45 6 3 45 9 45 3 45 12 3 45 15 3 45 18 75 3 45 24 3 4530 3 45 30 3 45 37 7 3 45 48 3 45 48 4 60 4 60 5 75 6 3 94 5 m 3 0 motor 4 1426 4 14 9 45 4 14 12 414 15 4 14 18 75 4 14 24 44 30 4 1430 4 14 37 7 4 14 48 4 14 48 4 14 60 4 14 60 5 75 6 3 94 5 215 4 347 6 4 347 9 45 4 347 12 4 347 15 4 347 18 75 4 347 24 4 347 30 4 347 30 4 347 37 7 4 347 48 4 347 48 4347 60 4 347 60 5 75 6 3 94 5 ii 3 78 motor 5 216 6 5 216 9 45 5 216 12 5 216 15 5 216 18 75 5 216 24 5 216 30 5 216 30 5 216 37 7 5 216 48 5 216 48 5 216 60 5 216 60 5 216 75 6 3 94 5 NM8 630 3 5 4 83 6 4 83 9 45 4 83 12 4 83 15 4 83 18 75 4 83 24 4 83 30 4 83 30 4 83 37 7 4 83 48 4 83 48 4 83 60 4 83 60 5 75 6 3 94 5 Nmss 630 220 4 2 motor 5 796 6 5 796 9 45 5 796 12 5 796 15 5 796 18 75 5 796 24 5 796 30 5 796 30 5 796 37 7 5 796 48 5 796 48 5 796 60 5 796 60 5 796 75 6 3 94 5 4 0 5152 6 552 945 55212 552
20. CONTENTS NAI Air Circuit Breaker Summary Installation and usage Dimensions and connection Secondary circuit wiring and maintenance Regular malfunction and solutions Intelligent controller Choosing manual Accessories Recommendation for users connecting bus bar Power loss A S curve Derating usage Coordination recommendations Selectivity protection Order form 01 06 09 13 I7 ES 24 25 2m 28 28 28 30 32 38 Circuit Breaker NAI Air CHNT GC RCC CB Summary 3 frame sizes 1 family The new range of air circuit breakers includes one family NAI series in three frame sizes one with rated current from 400A to 2000A another 2000A to 4000A and the other 4000A to 6300A NA1 2000 400A to 2000A NA1 3200 4000 NA1 6300 2000A to 4000A 4000A to 6300A ChNT NA1 Air Circuit Breaker NAI Air Circuit Breaker Drawout type Fixed type Intelligent controller Operating mechanism Auxiliary contact Locking device Arcing chamber Secondary connecting part Wire cable mechanical interlock Connecting rod type mechanical interlock Shunt release Closing electromagnet Under voltage release Motor driven energy storage mechanism Rotary handle Fixed plate CHNT NAI Air Circuit Breaker 1 Essentials of NAT 1 1 APPLICATION SCOPE NAI series air circuit breaker is suitable for the circuit of AC 50Hz 60Hz with rated service voltage 400V
21. IEE i b Terminals 62 7 can output NC normal close contact if that is required by users aol 27 ts sw c Terminal 35 can be directly connected to power automatic pre storing energy alternatively connect power after connecting NO E 494 p button manual controlled pre storing energy zs In order to avoid the damage to shunt release and closing electromagnet one group of NO shunt release or NC closing ya electromagnet contact should be separately connected to the control circuit em 180 260 Wiring diagram of communication type intelligent controller eo 7 l 5 O11 3 m e em S d PD DOD AD HA co N 362 m eo 2 H e Q 016 O 0 00 yA EU m o L j 2 11X17 N 24 b15 l80 014 nome PV gee ec ee i HAM AT 202 side o reaker 11 5 15 5 175 33 404 tnstallation panel wn wn Right amp outer t N side of breaker Opening hole on panel 213 CHNT NAI Air Circuit Breaker Li es N E3
22. arthing faults a NAT three pole circuit breaker is used in three phase three wire system without additional external connection mutual inductor Protective signal of earthing faults only adopts vector summation of three phase current Characteristic of protection is definite time delay protection b NAI four pole circuit breaker is used in three phase four wire system Protective signal of earthing faults adopts vector summation of three phase current and N pole current Characteristic of protection is definite time delay protection Model H 1 Reset button After the breaker trip by fault the reset button should be pressed in order to make it close again Otherwise it won t be realized 2 Display screen It shows time current and voltage etc 3 LED indicator display all states and types 4 Function key Press this keyto selectthe function to be operated 5 A key Check and setthe current and time for protection characteristic Press this key to circularly display each state of breaker 6 Confirm key After selecting the function or parameter press this key to confirm 7 Return key After the function is operated press this key to choose another function or set parameter 8 Programme interface Original program of release compiling of parameter and modification input 9 Communication light This light flashing if release at the communication state 10 Position lock Indicates the state of release if communication function is o
23. ase is less than 70 Us 3 Shunt release is damaged Maintenance method g 1 Check the mechanism if there is fault happened 1 Check the mechanism if there is fault happened 2 Check the Power voltage of shunt release is less than 70 Us or not 3 Replace shunt release Circuit breaker can t store energy Manual storage can t be realized Motor storage can t be realized 1 Power voltage of motor energy stored device is less than 85 Us 2 There is mechanical fault with energy storage device Mechanical fault with the energy storage device 1 Power voltage of motor energy stored device shouldn t less than 8596Us 2 Mechanical fault with the energy storage device Handle of drawerout type circuit breaker can t be drawn in or out Drawerout type breaker can t be drawn out atthe opening position Drawerout type breaker can t reach the making position No display on 1 Thereis padlock atthe opening position 2 Slideway or breaker body isn t pulled into its position 1 Handle isn t pulled out 2 Breaker is not totally at the opening position 1 Something drop into the drawer base and lock the mechanism or mechanism fault happens 2 Breaker body not match with the frame size rated current of drawer base 1 Release isn t connected with power 2 There is fault with release 1 Take away the padlock 2 Pull the slideway or breaker body into its position 1 Pull out the handle 2 Keep the circuit br
24. breaker 1 32 times more than the subordinate breaker when the instantaneous setting value is adjustive 36 3a NAI Air Circuit Breaker CHNT 16 Order form Customer Tel Date Quantity Model NA1 2000 NA1 3200 NA1 4000 NA1 6300 Rated current 400 0630 11800011000 2000 22500 Zoo 4000015000 In A 1250 31600 02000 3200 16300 only3 poles NOTE Installation mode Drawerout type Fixed type note In 4000A fixed type is not available Number of poles Three poles Four poles Protection function Others functions Optional function M type 1 Olr1 protection for overload long time delay Ir2 inverse time protection standard definite time delay protection for short circuit short time delay Ir3 f l Si i l Display of voltage type default instantaneous protection for short circuit Ir4 4 section protection for Display of frequency f single phrase earthing 1 Function of current i configuration 2 Olr1 protection for overload long time delay Ir2 definite time delay met r Display of power factor protection for short circuit short time delay Ir3 instantaneous protection 5 Functonof Display of power for short circuit Ir4 4 section protection for single phrase earthing
25. e 14 Trip indicator Indicate the release sending out tripping signal 15 Indicator flashing shows the earthing fault process state if shining with trip light shows it has tripped 16 Indicator flashing shows the fault process state of instantaneous short circuit if shining with trip light shows it has tripped 17 Indicator flashing shows the fault process state of short circuit short time delay if shining with trip light shows it has tripped 18 Indicator flashing shows the fault process state of overload long time delay if shining with trip light shows it has tripped 19 Set state of earthing fault protection set current is displayed if the light flashs 20 Set state of earthing fault protection set time is displayed if the light flashs 21 Set state of long time delay protection set current is displayed if the light flashs 22 Set state of long time delay protection set time is displayed if the light flashs 23 Set state of short time delay protection set current is displayed if the light flashs 24 Set state of instantaneous protection set time is displayed if the light flashs 25 Set state of short time delay protection set time is displayed if the light flashs 26 Loadl load2 indicator means two current settings are monitored with load 27 the indicator flashs once means the set value has been saved Oud un edil NAI Air Circuit Breaker ChNT 7 3 Protecting manners for e
26. eaker totally at opening position 1 Check and clean the drawer base or contact with manufacturer 2 Match the body with relevant drawer base 1 Check the power is connected or not 2 Cut off the power then connect again Otherwise contact with manufacturer intelligent release panel Fault indicator still flashing after pressing the clear button Closing electromagnet 1 Rated control voltage is less than 85 Us 2 Electromagnet is damaged Fault happened with intelligent release 1 Check the electromagnet power voltage shouldn t be less than 85 Us 2 Replace the closing electromagnet Cut off the power then connect again Otherwise contact with manufacturer 7 Intelligent controller Intelligent controller is the core part of circuit breaker it is classified into two types standard and communication Protection function Inverse time protection for overload long delay Inverse time protection or definite time delay protection for short circuit short delay Instantaneous short circuit protection Protection of neutral line or earthing faults Over voltage protection Under voltage protection Over frequency protection Under frequency protection Protection of unbalanced voltage Protection of phase sequence Measuring function Measure of current Measure of voltage Measure of frequency Measure of power factor Measure of power Detection of phase sequence Measure of unbalanced rate of voltage Measure of
27. ed Defaultinstantaneous rated current Current A settingratings 1 2In kA 400 4 8 6 348 9 45 6 348 12 6 348 15 6 348 18 75 6 348 24 6 348 30 6 348 30 6 348 37 7 6 348 48 6 348 48 6 348 60 6 348 60 6 348 75 6 348 94 5 630 7 56 9 998 12 9 998 15 9 998 18 75 9 998 24 9 998 30 9 998 30 9 998 37 7 9 998 48 9 998 48 9 998 60 9 998 60 9 998 75 9 998 94 5 H 800 9 6 12 696 15 12 696 18 75 12 696 24 12 696 30 12 696 30 12 696 37 7 12 696 48 12 696 48 12 696 60 12 696 60 12 696 75 12 696 94 5 1000 IE 15 87 18 75 1559724 15 87 30 15 87 30 15 87 37 7 15 87 48 15 87 48 15 87 60 15 87 60 15 87 75 15 87 94 5 1250 15 19 837 24 19 837 30 19 837 30 19 837 37 7 19 837 48 19 837 48 19 837 60 19 837 60 19 837 75 19 837 94 5 1600 19 2 25 392 30 25 392 30 25 392 37 7 25 392 48 25 392 48 25 392 60 25 392 60 25 392 75 25 392 94 5 2000 24 31 74 37 7 31 74 48 31 74 48 31 74 60 31 74 60 31 74 75 31 74 94 5 2000 24 310724 37 7 ahal aA 3 15 24 2601 93157460 31 7427519 31 74 94 5 NA1 3200 2500 30 39 675 48 39 675 48 39 675 60 39 675 60 39 675 75 B9 675 94 5 3200 38 4 50 784 60 50 784 60 50 784 75 50 784 94 5 WAA 3200 38 4 50 784 60 50 784 60 50 784 75 50 784 94 5 4000 48 63 48 75 63 48 94 5 4000 48 63 48 75 63 48 94 5 NA1 6300 59000 60 79 35 94 5 6300 75 Note It can satisfy the selective protection if only the short time delay setting value of the superior
28. ed And the closing operation can be realized either by closing electromagnet or manual button closed mew Mechanical interlock acting Check the working state oftwo circuit breakers Manual energy storage leads to locking of breaker fixed with mechanical interlock Closing electromagnet 1 Rated control voltage is 1 Power voltage of closing electromagnet less than 85 Us shouldn t less than 85 Us 2 Closing electromagnet 2 Replace the electromagnet is damaged Tripping after 1 Check the breaking current value and operation time of intelligent release losiha th M l 2 Exclude the short circuit fault ifit happens closing the Trhippingimmediately 3 Exclud adhi circuit breaker 1 Shortcircuitcurrentisclosed Exclude overload fault Fault indicator 2 Delaytrippingbecauseof 4 Check the normal state of breaker transientcurrentishighwhen flashing closing 5 Modify the current setting value of intelligent release 3 Overloadcurrentisclosed 6 Press the reset button to reclose the breaker Shake with the manual energy storage handle up and down about six times to click 16 zs CHNT NAI Air Circuit Breaker Fault description Circuit breaker can t be opened Reasons analysis The breaker can t be opened manually 1 There is fault with mechanical operatin mechanism The breaker can t be opened by motor remotely 1 There is fault with mechanical operating mechanism 2 Power voltage of shunt rele
29. etting before delivery 12In Available set scope of Ir4 earthing protection current 0 2 0 8 In Available set scope of operating time of earthing protection 0 1 0 4s Conventional setting before ex factory 0 5 In OFF Powersupplyofcontroller AC380V 1AC220V LIDC220V LIDCI10V Optional m Undervoltage AC380V OAC220V CIDC220V DIcustomize V Optional m release default 9 configuration Instantaneous Delay s 1s 3s 5s and 7s dialed delay may be provided O Delay of RC under voltage release 1 7 s_ Optional Q Shuntrelease default AC380V L1IAC220V LIDC220V LIDCI10V Optional A configuration m Motor default un o configuration AC380V L1AC220V LIDC220V LIDCI 10V Optional D c Us Interlocking Connecting rod interlocking only provided for drawer type 2 S device costwill Steel cable interlocking for both types of drawer type and fixed type Button lock Optional S becalculated Key lock for both types of drawer type and fixed type Door interlock open or closed position S additionally Door interlock status of ON OFF D A Others functions cost will be calculated additionally Funct
30. factor d Active power display Refer to intelligent controller user manual for details 20 Model M Model H HNT N 1 3200 12 13 ges 14 S 15 16 19 17 18 20 21 1 Reset button After the breaker trip by fault the reset button should be pressed in order to make it close again Otherwise it won t be realized Display screen It shows time and current value LED indicator display all states and types Select key Under normal operation state shows the parameters of current time or voltage of every phase Clean key Press this key to make breaker normally operate after release s setting test fault or data check Set key Check and set the current and time for protection characteristic Press this key to circularly display each state of breaker 7 Trip or non trip key Used for release test function when tested the breaker is needed to be broken or not 8 Fault check key Press this key to display the last fault state and its fault current and time 9 Save key Setting the current and time 10 A KA S indicator Indicate the unit of displayed value 11 G indicator Indicate the displayed current is earthing fault current 12 LI L2 L3 indicator L1 L2 L3 is the phase of displayed current if MAX simultaneously shining with one of L1 L2 L3 it shows the displayed phase s current is maximum among three phases 13 Test indicator it indicates the breaker is at the test stat
31. fying frequencyis no morethan 5 times min Afterthe motor finishes energy storage closing electromagnet can instantly release spring force of operation mechanism and quickly close the circuit breaker Characteristic Rated control power voltage Us V AC400 230 127 DC220 110 Work voltage V 0 85 1 1 Us Power loss 300VA 40W Energy storage time Less than 70ms Forbid making the power for long time to avoid being damaged 9 4 Motor driven energy storage mechanism electrifying time is no more than 5s time and electrifying frequency is no more than 3 times min With automatic re storing energy function which is convenient for switching duplicate power supply Characteristic Rated control power voltage Us V AC400 230 DC220 110 Work voltage V 0 85 1 1 Us Power loss 85W 110W 150W 192W Storing energy time Less than 5s Forbid making the power for long time to avoid being damaged 9 5 Auxiliary contact Standard model 4 NO normal open and 4 NC normal close Special models 3 NO amp 5 NC 5 NO amp 3 NC 6 NO amp 2 NC 2 NO amp 6 NC Rated value Rated voltage V Conventional free air thermal current Ith A Rated control capacity AC230 6 300VA AC400 6 300VA DC220 6 60W 9 6 Off position locking device Off position locking device will make the breaking button locked at the pressed position and the breaker can t be closed at this moment When drawer type breaker at the breaki
32. ghtening torques to be used are shown in the table below These values are for use with copper busbars and steel nuts and bolts class 8 8 l id 5 Dimensions and connection 1 breaker terminal 2 busbar NA1 2000 Drawout type 3 bolt c 45 Disconnected position 4 washer 448 4 pole 5 nut i 7 353 3 pole E Q X B gt Hm 4 ap e Examples 2 2 wh E amp E fe mio AES 2 aeos mm 2 11 x17 Fils SE dd gs BE Pan 10 97 175 ci D D ER 421 187 5 We ele m eR 292 l 465 za crine m Right amp outer side of breaker pole 470 4 pole zb 8 013 xt l N pole 28 EDO i ed DOOD 9949 A Cn L L H z 4 ep QI OD OD oo an nl Pers Prey ays Q g e eo N 302 ME e m 79521 95 95 Preferred tightening torque for NAT s tightening components S 4 N A Horizontal lt Right amp outer Type of screw Application Preferred tightening torque IE sice af braa i p lises 15 Installation panel In A am 3 M4 Screws for secondary terminals 11Nm 344 ce 630 10 i MIO Installing bolts of Air Circuit Breaker 45Nm 800600 le Opening hole on panel 2000 20 MI2 Connection terminals 50Nm 2 Ta ja Vertical CHNT NAI Air Circuit Breaker NA1 2000 Fixed type NA1 3200 Fixed type Zero arcing covering ferreous material Zero arcing covering
33. ion of earthing protection with external mutual inductor Mutual inductor is prepared by the user Ln Connection of main circuit Explanation of vertical connection prepared with vertical bus bar conventional supply is horizontal connection Revolving bus bar Drawerout type In 3200 cost of the increased will be burden by the user Remark Current of frame size rated current and auxiliary control voltage must be indicated when ordering Note 1 Please mark 4 or fill figure in the relative 3 8 if no mark we will provide according to conventional factory settings 2 For ordering products with optional function or special requirements please contact with us NA1 6300 NAT 4000 NA1 3200 NA1 2000
34. ndicates long time delay tripping signal H is wireless 16 Earthing tripping or alarm signal output or leakage alarm signal 17 Unloading output of Nol signal 18 Unloading output of No 2 signal x AAA St Hase 19 output common line of contacts 20 Self diagnose alarm signal output 1QF za Rasi I D as 199 214 Fault tripping signal output 223 23 24s A B C Three phase power input terminal Ta Stop Auto IE Ee ST DP DP Transformer device S i 34 SA l A 1 Single receiving circuit operation Circuit a SA 5 La eels Neil Li ia T 1146 1TA1 1TA2 1TA3 TAI 2TA2 12TA3 um IN GIN aN 1 mamaa h c l l l 1 FUI l TT r im processing unit unit NAPAK 101 i WA AUA UA A ng OF fag 237 209 ua JHP a 202 81 ae F ey E eg I OF LN CEU UOS i uy 1QF 2QF Circuit breaker NAT CI NAI Inner components 1FU1 2 Fuse RT14 20 10A Q Under voltage coil 400V 1SB1 2 Button LA18 22 Each one for red and green F Shunt coil 230V TTE 1SA Change over switch LW12 16 4 0081 1 X Closing electromagnet 230V FEF 1KT Time delay relay JS14A 230V M Energy storage motor 230V TAI i 1YEHL Signal indicator AD11 25 230V Yellow SA Motor limit switch IGNHL Signal indicator AD11 25 230V Green 1RDHL Signal indicator AD11 25 230V Red Number inside the broken line circle is the terminal i number on terminal block of NA1 body 1 CHNT NAI Air Circuit Breaker 5 Wiring the secondary circui
35. ng position pull out the lock rod and lock the breaker by padlock after that circuit breaker can t reach test or making position Padlock is prepared by Sa users locks and keys will beprovided by us Separate lock and key is matched with one set of circuit breaker Two same locks and keys are matched with two circuit breakers three same locks and two same keys are matched with three circuit breakers 9 7 Mechanical interlock It Can realize the interlock of two horizontal or vertical installed three pole or four pole drawer type or fixed type circuit breakers 2m max 9 8 Connecting rod type mechanical interlock Three vertical installed three pole or four pole drawer type or fixed type circuit breakers realize the interlock between one breaker with another two different state breakers 10 Recommendation for user s connecting bus bar Inm A NA1 2000 NA1 3200 NA1 4000 NA1 6300 In A 630 800 1000 1250 1600 2000 2000 2500 2900 3200 4000 3H000 4P 4000 5000 6300 Thickness mm 5 6 6 8 8 8 8 OR EIOS TOS eg EON STONE ED Busbar Width mm 50 60 80 80 100 100 100 100 100 100 100 100 100 100 100 Number 2 2 2 2 2 2 2 2 4 4 4 4 4 6 6 e D Note the specifications in the table is obtained as the ambient temperature of air circuit breaker is 40 C with open installation this is in compliance with the specification of copper busbars ado
36. ntelligent controller Transformer Rip E M O mutualinductor OU FOR 2 var e N Intelligent controller Transformer CURE TZ Iintetligent controller Current 100 KL 30 40 50 60 70 80 Moe Transformer mutualinductor Transformer mutualinductor oe LI WA LI CE GE d ce L3 A L3 eta N 7 PE Intelligent E Intelligent controller controller PE C mutualinductor LI a CTOs L2 L3 N e External connection mutual inductor is used for protection of earthing faults electric leakage through detecting current by means of zero sequence sampling connected to No 25 and No 26 terminals i e itis external connection mutual inductor residual current The sensitivity of this type is very high and the current of earthing faults is not related with rated current of the circuit breaker It is suitable for the earthing protection with smaller earthing current The external connection mutual inductor will be prepared by the user zd 3 CHNT NAI Air Circuit Breaker 8 Choosing manual Type NA1 2000 9 Accessories 9 1 Shunt release electrifying time is no more than 1s time and electrifying frequency is no morethan 5 times min Except manual operated to directly break the circuit breaker for special products It can be remote operated to break the circuit breaker Characteristic Rated contr
37. ol power voltage Us V Working voltage V Power loss Breaking time AC400 230 127 0 7 1 1 Us 300VA 30ms 50ms DC 220 110 40W Rated ultimate breaking capacity Icu Icu 80kA 400V KOKA 690V Rated service breaking capacity Ics Ics 50kA 400V 40kA 690V Rated short time withstand current Icw Icw 50kA 400V 40kA 690V Rated current In A 630 800 1000 1250 1600 Number of poles SHA Rated voltage Ue V 400 690 Rated insulation voltage Ui V 1000 Rated current of N pole A 50 In 10096In Break time ms 23 32 Intelligent Standard type M e e e Q controller Communication type H e e e e e Electrical life 1000 Operation performance mechanical life S 2500 Maintenance 10000 Connection pattern Horizontal Vertical Type Short circuit breaking capacity NA1 3200 NA1 4000 NA1 6300 Rated ultimate breaking capacity Icu Icu 100kA 400V 65kA 690V Icu 120kA 400V 85kA 690V Rated service breaking capacity Ics Ics 80kA 400V 65kA 690V Ics 100kA 400V 75kA 690V Rated short time withstand current Icw cw 80kA 400V 50kA 690V Icw 100kA 400V 75kA 690V Rated current In A 2000 3200 4000 4000 5000 Number of poles 3 4 3 3 4 3 Rated voltage Ue V 400 690 400 690 Rated insulation voltage Ui V 1000 1000 Rated current of N pole In A 5096In 100 In 50 In 100 In Fixed disconnection time ms 23799 23050 Intelligent Standard type M 9 e e
38. perated Note Conform to the communication protocol of Modbus or Profibus DP Characteristic of intellingent controller C NAT three polecircuit breaker is used inthree phase four wire system Current mutual inductor connected with neutral pole N outside and the mutual inductor inside circuit breaker are used for protection of earthing faults after combining connected to No 25 and No 26 of terminals Neutral pole mutual inductoris provided together with the circuit breaker Protective signal of earthing faults adopts vector summation of three phase current and N pole current Characteristic of protection is definitetime delay protection d External connection mutual inductor is used for protection of earthing faults through detecting the current of earthing cable directly connected to No 25 and No 26 of terminals i e itis earth currenttype which is applicable for earthing of transformer and here the longest distance between mutual inductor and circuit breaker is no morethan 10m Characteristic of protection is definite time delay protection type Characteristic of protection is definite time delay protection Current Current Transformer t x mutualinductor 1 ER mc Sr L2 lt L3 Intelligent controller Current Ue as _mutualinductor z Z C On 2 x CO 13 x EX N I
39. pted underthe heating conditions regulated in IEC EN60947 2 wid CHNT NAI Air Circuit Breaker 11 Power loss 2000 j 5000 Inm A NA1 2000 NA1 3200 NA1 4000 NA1 6300 WA jM In A 630 800 1000 1250 1600 2000 2000 2500 3200 4000 3P4000 4P 4000 5000 6300 LT 4400 Power loss Drawertype 70 1o i2 I 263 440 530 109284 600 737 921 900 575 898 1426 1600 4200 W Fixed type 344 50 78 122 200 262 200 312 307 lt ee 3 He In 4000A E 1300 In 1250A sun 12 A S curve 1100 RETOUR 5 3200 In 3200A 9 1000 3000 Pt A sX 10 800 Se SM In 2500A 741 700 In 00 EE 600 2200 In 2000A 500 2000 400 1800 ats AL 40 45 50 55 60 65 70 40 45 50 55 60 65 70 Environmental temperature C Environmental temperature C 200 NA1 2000 NA1 3200 NA1 4000 180 170 160 150 140 130 120 7000 100 90 6800 60 6600 20 6400 20 6200 10 6000 l 20 40 60 a 100 r Ka 2 5800 Is prospective symmetrical current of an a c circuit d 5600 5 5400 5200 2 5000 13 Derating usage g 4800 amp 4600
40. rding to the requirements on the instruction manual The vertical inclination degree shall not exceed 5 2 4 Note Without the intelligent controller the breaker functions as a switch disconnector Structure Drawout type breaker and Fixed type breaker Drawout type breaker switch disconnector Drawer seat Body The breaker is composed of body and drawer base Inserting the body into the drawer base make it into drawout type breaker Fixed type breaker switch disconnector Fixed plate for the fixed type breaker Fault breaking indicator Enclosure reset button Waking button Energy storage amp Breaking button release indicator Breaking making indicator Name plate Structure for in and out Rotate ane Cv Rotate in Under voltage release page 25 Shunt release page 25 Closing electromagnet page 26 Auxiliary contact page 27 Motor driven energy storage mechanism Locking device page 26 page 27 Intelligent controller page 19 CHNT NAI Air Circuit Breaker 4 Installation and usage 4 1 Installation 4 1 1 Unload the breaker from the soleplate of package If it is drawout type firstly pull out the handle under the drawer base of breaker and plug it into the hole on central part of plastic cover under the drawer base crossbeam anticlockwise turns the handle body will slowly slide along the outside of drawer base When the guide rod points to
41. s eliminates any risk of deformation which could interfere with correct operation of the circuit breaker NAT devices can also be mounted on a vertical plane using the special brackets Mounting with vertical brackets Mounting on rails 4 1 5 Partitions Sufficient openings must be provided in partitions to ensure good air circulation around the circuit breaker Any partition between upstream and downstream connections of the device must be made of nonmagnetic material For high currents of 2500 A and upwards the metal supports or barriers in the immediate vicinity of a conductor must be made of non magnetic material A Metal barriers through which a conductor s pars passes must not form a magnetic loop The mechanical connection must be exclude the possibility of formation of a magnetic loop around a conductor non magnetic material 1 A non magnetic material 4 1 6 Busbar connections The busbars should be suitably adjusted to ensure the connection points are positioned on the terminals before the bolts are inserted B The connections are held by the supporter which is fixed to the framework of the switchboard in this way the circuit breaker terminals do not have to support its weight C This support should be placed close to the terminals CHNT NAI Air Circuit Breaker 4 1 7 Main circuit adopts cable connection Users should not apply too
42. strong mechanical strength on the terminals of Air Circuit Breaker Extend the bus bar of circuit Connected position Ten CEU Disconnected position PAGEL position breaker with connecting bus bar position the wiring piece of cable before inserting bolts the cable should be fixed on the frame of distributing cabinet firmly Connected a MEUM Test k 7 ls Disconnected 4 1 8 Clamping Correct clamping of busbars depends on the tightening torques 1 Both main circuit and control 1 The main circuit is disconnected dr ASS l used for the nuts and bolts etc Over tightening may have the circuit are connected and the control circuit is connected Neither the ma arcu Main body is out same consequences as under tightening 2 Normal application conditions 2 Test application conditions nor the control circuit is connected of the drawer seat For connecting busbars to the circuit breaker the ti
43. t according to electric principle diagram 6 Regu lar malfunction and solutions Note Bolts nuts gaskets shouldn t be left inside the drawer seat to avoid being blocked 5 2 Operation Fault description Reasons analysis Maintenance method Check the rated voltage of the following components whether conforms to the power voltage Such as under voltage release mM shunt release closing electromagnet motor driven mechanism and intelligent controller 1 Check the breaking current value and operation time of intelligent release 5 3 Maintenance Over load tripping 2 Analyze the load and electric network exclude the overload if it happens Check the technical parameters in time or add some lubricating oil etc This breaker structure is arranged vertically IL indicator flashing ird B O ees Ra aini current setting value and modularized composition with each functioncell separated which make the maintenance easy It has compact structure VETOSS ARTES OUR ONLO TECN TELNE picaner reliable operation and strong free maintenance capability Please check the technical parameters on the nameplate in accordance s TENUES p E wuhshesesuirementscrerder Detareimetallinon 1 Check the breaking current value and operation time of intelligent release q Short circuit tripping 2 Exclude the short circuit fault if it happens Is or li indicator flashing 3 Check the setting value of intelligent release 4 Check the normal state of breaker 5 Press the reset button
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