TRENDnet Series 300 Switch User Manual
Contents
1. FUNCTION S1 DIP SWITCH switch 2 actuators 6 7 8 as shown below enable Actuator on aas reurs E Delay Before Transter LD TDBT S2 DIP SWITCH Shaded DIP switches are standard factory settings Actuator 7 on 0 disable Actuator 8 on mo Note 3 seconds Acus or ron a If the Motor Load Transfer feature is enabled Actuator 7 off Pm it will be activated following the Load 10 seconds Actuator 8 on Disconnect Feature Delay Before Transfer ATA delay arasen Actuator 8 off gt Shaded DIP switches are standard factory settings Delay After Transfer LD TDAT 52 DIP SWITCH enable Actuator 6 on disable Actuator 6 off o Enabling the Delay After Transfer will cause the control signal to reset after the same delay as set for the Delay Before Transfer REMOTE CONTROL FEATURES These remote control features require a customer supplied normally closed contact suitable for a 5 V de low energy circuit Refer to the Wiring Diagram provided with the ATS Activate appropriate DIP switch S2 actuators below Remote Test terminals CP6 7 Remote Transfer to Emergency CP8 9 RTSW S52 DIP SWITCH RTE 52 DIP SWITCH disable Actuator 3 on o disable Actuator 2 on gt enable Actuator 3 off l enable Actuator 2 off Bypass Transfer Time Delay CP12 13 Inhibit Transfer to Emergency CP10 112. Step Press Button Display Meaning 1 hand hand on 2 hand 10 permanent on 3 hand O permanent off 4 hand O back to automatic Daylight Savings Standard Time Change To change to Daylight Savings time press the 7h button once Clock advances by one hour and 1h appears in display To change to Standard Time press the 7 button again the clock sets back one hour and 1h disappears CONTROL FEATURES continued INPHASE MONITOR FOR MOTOR LOAD TRANSFER Inphase monitoring logic controls transfer and retransfer of motor loads so that inrush currents do not exceed normal starting currents It avoids nuisance tripping of circuit breakers and mechanical damage to motor couplings The Motor Load Transfer feature is built into the controller DIP switch S1 actuator 5 activates this feature right ON left OFF LOAD DISCONNECT FEATURE Connect external circuits to the terminals indicated on the Wiring Diagram provided with the ATS The double throw Form C contact is rated for28 VDC or 120 VAC 5 amps resistive The contact operates prior to aselectable 0 3 10 or 20 second delay before transfer of the Automatic Transfer Switch The contact resets either immediately following transfer or after the same delay as set for pre signal before transfer Time delay between the load disconnect control signal and initiation of transfer is set on the controller with DIP
3. TD E N BYP S2 DIP SWITCH N E INHIB 52 DIP SWITCH disable Actuator 1 on disable Actuator 4 on o enable Actuator 1 off enable Actuator 4 off CONTROL FEATURES continued OPTIONAL STRIP HEATER Accessory 44 Accessory 44 Strip Heater is designed to keep ambient temperatures within the Automatic Transfer Switch enclosure at acceptable levels This accessory consists of a mounting bracket with strip heater thermostat and terminal block A transformer with fuses is included when the power for the assembly is derived from voltages above 120 Vac The 120 V ac customer powered assembly does not include a transformer This optional accessory is available factory installed or in kit form Turn the thermostat s dial to required setting as shown thermostat dial turn counterclockwise to lower temperature G turn clockwise to raise temperature AVAILABLE KITS FROM ASCO Controls Strip Heater Accessory 44 Description Accessory Kit Description Accessory Kit Programmable Engine Exerciser 11CD K601111 120 volt customer supplied voltage 44A K613127 001 without transformer Serial Communication Module 72A K601110 208 480 volt ATS derived voltage 44G K613127 002 with transformer 380 volt ATS derived voltage 44G K613127 with transformer 550 600 volt ATS derived voltage 44G K613127 003 5 5 with tra
4. after the cables are pulled into position and before they are connected they should be tested to verify that they are not defective or have been damaged during installation A CAUTION Protect the automatic transfer switch from construction grit and metal chips to prevent malfunction or shortened life of the ATS Connecting Power Conductors After the power cables have been tested connect them to the appropriate terminal lugs on the transfer switch as shown on the wiring diagram provided with th Make sure the lugs provided are suitable for us cables being installed Standard terminal lugs are solder less screw type and will accept the wire sizes listed on the drawings provided with the Series 300 Be careful when stripping insulation from the cables avoid nicking or ringing the conductor Remove surface oxides from cables by cleaning with a wire brush When aluminum cable is used apply joint compound to conductors Tighten cable lugs to the torque specified on rating label INSTALLATION continued Controller Ground A grounding wire must be connected to the controller s lower left mounting stud Because the controller is mounted on the enclosure door a conductive strap must be used between the enclosure and the door This connection provides proper grounding which does not rely upon the door hinges Engine Starting Contacts Customer connections for engine control contact and TS auxiliary contacts connectio
5. 10 20 30 sO sO O 70 O 30 Figure 1 1 Connections to engine starting contact terminal block located on the Transfer Switch Connections to Controller for other Control Features located on bottom of Controller Feature Engine Exerciser Remote Control Features Connections Connections connection refer to the Wiring Diagram amp see Wiring Diagram if provided page 5 3 for DIP switch settings amp refer to page 5 3 refer to Each control contact must be suitable for factory for DIP switch settings page 5 2 for a 5 V DC low energy circuit use only m_m 6 7 8 9 10 11 14 12 13 123 LOAD DISCONNECT CONTACTS OPTIONAL MOMENTARY ENGINE TEST EXERCISER SWITCH MAINTAINED OPENTO TRANSFER TO EMERGENCY INHIBIT TRANSFER TO EMERGENCY BYPASS TRANSFER TIME DELAY 15 16 Oo 0 OUTPUT CONTACTS 120VAC 5A INPUT CONTACTS 5VDC 5mA FOR FACTORY USE Figure 1 2 Input output label on the Controller showing possible connections to the lower terminal block 1 2 INSTALLATION continued Functional Test The Functional Test consists of three checks manual operation voltage checks and electrical operation 4 CAUTION Do these checks in the order presented to avoid damaging the automatic transfer switch Read all instructions on the Wiring Diagram and labels affixed to the automatic transfer switch Note the control features that are provided and review
6. Connected To Normal and the ARARE Normal Source Available lights NORMAL A CAUTION should come on L_EMERGENCY Verify that the feeders have been Use an accurate voltmeter to connected to the proper lugs check phase to phase and 2 phase to neutral voltages pres A DANGER ent at the transfer switch normal source terminals Use extreme caution when using a meter to measure voltages in the following Close the emergency source steps Do not touch power terminals circuit breaker Start generator SOURCE shock burns or death could result g if necessary The Transfer AVAILABLE Switch Connected To Normal NORMAL Perform steps 1 through 6 at the right Observe the status and the Emergency Source EMERGENCY lights See Figure 1 5 Available lights should come on Black circle means light is on Use an accurate voltmeter to O White circle means light is off check phase to phase and 4 phase to neutral voltages pres P ent at the transfer switch emer If necessary adjust voltage regulator on the generator gency source terminals according to the manufacturer s recommendations The Automatic Transfer Switch will respond only to the rated Use a phase rotation meter to voltage specified on the Transfer Switch nameplate check phase rotation of emer 5 gency source it must be the same as the normal source Shut down the engine genera tor if applicable The Emergen cy Source Accepted light should SOURCE 6 go off Then put the s
7. Figure 4 4 Setting DIP switch actuators SECTION 5 CONTROL FEATURES ENGINE EXERCISERS These timers periodically exercise the emergency engine generator plant They can be set to exercise with or without load transfer or they can be completely disabled The engine generator should be exercised under load once a week fora minimum time period of 20 minutes or follow the recommendations of the engine generator set manufacturer Refer to page 4 2 for location of DIP switches battery provided and jumper block in the controller BUILT IN ENGINE EXERCISER DIP Switch Settings The engine exerciser included in ASCO Series 300 To crigy STDP S2 DIP Automatic Transfer Switches provides a once a week SWITCH SWITCH 20 minute exercise period It occurs immediately when Std Timer Actuator a Actuator a the SET ENGINE EXERCISER push button is pressed Enabled Ton Son and held for at least 5 seconds and then at the same time Sid Timer Actuator Actuator s Disabled 7 off 50n weekly thereafter A 9 volt alkaline battery Duracell as MN1604 Everready 522 or Panasonic 6AM6 is without Actuator a furnished and installed in the controller to maintain the Load Bott setting The battery jumper block must be shifted to the Exercise Actuator ON position See Figure 4 2 on page 4 2 with Load 8on Fill in day and time set Week Day Time A Sh
8. Legally Required Standby Systems NEC Article 702 Optional Standby Systems NFPA 99 Health Care Facilities and NFPA 110 Emergency and Standby Power Systems Rating Label Each automatic transfer switch contains a rating label to define the loads and fault circuit withstand closing ratings Refer to the label on the transfer switch for specific values A WARNING Do not exceed the values on the rating label Exceeding the rating can cause personal injury or serious equipment damage Series 300 Automatic Transfer Switches are factory wired and tested Installation requires skid removal then secur ing the enclosure to the supporting foundation Remove the Shipping Skid Open the front door and remove the four lag screws two in front two in rear securing the enclosure to the wood skid Supporting Foundation The supporting foundation for the enclosure must be level and straight Refer to the applicable enclosure outline drawing included with the Series 300 for all mounting details including door opening space If bottom cable entry is used the foundation must be prepared so that the conduit stubs are located correctly Refer to the enclosure outline drawing for specified area and location Provide cable bending space and clearance to live metal parts When a concrete floor is poured use interlocking conduit spacer caps or a wood or metal template to maintain proper conduit alignment Mounting Refer to th
9. Switch Leave the engine generator starting control in the automatic position ntrols and indicators observe these lights The normal source must be available and the generator must be ready to start Check that the Normal Source Available light is on URCE AVAILABLE NORMAL EMERGENCY Press and hold the Transfer Switch Test button until the engine starts and runs This should happen within 15 sec position The Load Connected to Emergency light should come on and the Load Connected to Normal light should go off SOURCE The Emergency Source AVAILABLE Available light should come on NORMAL EMERGENCY The transfer switch should transfer to the Emergency TOAD CONNECTED TO NORMAL C EMERGENCY T the transfer to emergency delay is used the transfer should occurs after a time delay 5 up to 5 minutes For immediate transfer press the Bypass Time Delay button The transfer switch should transfer back to the Normal TOAD position The Load Connected CONNECTED TO to Normal light should come on NORMAL and the Load Connected to EMERGENCYO Emergency light should go off if the retransfer to normal delay is used the retransfer should TSAR OR occur after a time delay 7 up to 30 minutes For immediate retransfer press the Bypass Time Delay button The unloaded runn
10. not transfer the load to normal source when normal returns or when TRANSFER SWITCH TEST button is released Wait for Retransfer to Normal Delay 1 sec to 30 min to time out For immediate re transfer press BYPASS TIME DELAY button If Motor Load Transfer is active wait for in phase condition see below Voltmeter should read at least 90 of nominal phase to phase voltage between transfer switch terminals NB and NC NC and NA and NA and NB or NL1 and NL2 for 2 pole switches Gen Set does not stop after load retransfer to the normal source Wait for the 5 minute Unloaded Running Delay to time out Starting control must be in automatic position A DANGER Use extreme caution when using a meter to measure voltages in the following steps Do not touch power terminals shock burns or death could result 1 Connect a voltmeter twice sys set for phase to phase voltage between Transfer Switch terminals NA and EA 2 Manually start generator Voltmeter needle should sweep back and forth at a regular rate between 0 and about twice system voltage Ifthe problemis Trouble Shooting the Motor Load Transfer Feature refer to page 5 3 3 Press and hold TRANSFER SWITCH TEST button The load should transfer to emergency source when meter needle is near 0 volts If transfer does not occur Motor Load Transfer feature is not operating 4 Release the Transfer Switch Test butto
11. their operation before proceeding 1 Manual Operation Test A detachable maintenance handle is provided on the frame of the Transfer Switch for maintenance purposes only Manual operation of the transfer switch should be checked before it is energized operated electrically A WARNING Do not manually operate the transfer switch until both power sources are disconnected open both circuit breakers Table B Maintenance handle positions ATS Position Indicators E OPEN Normal upper contacts open CLOSED N lower contacts closed E CLOSED E upper contacts dosed mergency OPEN NI lower contacts open Emergency contacts oF faa o window indicators lio OPEN or CLOSED A o Normal contacts __ oe contact position indicators left side Nea Figure 1 4 Contact position indicators 1 3 counterclockwise DOWN closes the Emergency source contacts upper and opens the Normal source contacts lower Turn counterclockwise to Emergency Turn clockwise 7 Grasp to Normal handle insert firmly handle lide hub SA ehi into hole onto shaft Figure 1 3 Maintenance handle After deenergizing both power sources open the enclosure door Locate and remove the maintenance handle and hub stored on the transfer switch frame Then install the hub onto the center operator shaft and insert the handle firmly into the hole in the side of the hub s
12. N 1 Cc ee 7 Sin i SS Neutral Phase Poles Amperes Voltage Controller Enclosure B switched 2 single 1000 C 208 L 440 1 standard C ype 1 C overlapping 3 three 1200 D 220 M 460 1X it F type 3R blank solid 1600 E 230 N 480 accessories G type 4 2000 F 240 P 550 aae L type 12 2600 H 380 Q 575 blank open type 3000 J400 R 600 type 4 amp 12 enclosures are available Kais only for 1000 1200 amp 1600 amp sizes neutral connections power connections Transfer Switch power connections neutral connections 2000 amp terminal block TB for engine start and switch position contacts Controller DMN membrane controls size in typical enclosure with location of customer connections SECTION 1 ASCO Series 300 Automatic Transfer Switches ATSs are Listed under Underwriters Laboratories UL 1008 Standard for Safety for Automatic Transfer Switches All control features are UL Component Recognized which assures that ASCO automatic transfer switches meet OSHA Safety Requirements and will be acceptable to electrical inspectors ASCO Series 300 Automatic Transfer Switches are suitable for emergency and standby system applications They meet emergency system rating requirements as defined in National Electrical Code NEC Article 700 and UL 1008 Also they are suitable for the requirements of NEC Article 517 Health Care Facilities NEC Article 701
13. Operator s Manual ASQ Series 300 Automatic Transfer Switches G design 1000 through 3000 amps 1000 1200 1600 amp sizes A DANGER DANGER is used in this manual to warn of high voltages capable of causing shock burns or death A WARNING WARNING is used in this manual to warn of possible personal injury A CAUTION CAUTION is used in this manual to warn of possible equipment damage Refer to the outline and wiring drawings provided with ASCO Series 300 ATS for all installation details ASCO POWER TECHNOLOGIES L P 50 Hanover Road Florham Park New Jersey 07932 USA www asco com pu 2000 amp size An experienced licensed electrician must install the ATS g TABLE OF CONTENTS section INSTALLATION 000ccceeeeeneeee 1 SEQUENCE OF OPERATION 2 TESTING amp SERVICE 0 00005 3 ADJUSTMENTS 00 00 kattan eee 4 CONTROL FEATURES 5 5 INDEX orenen i odeeancn dante back cover 381333 122 B Nameplate The Transfer Switch nameplate includes data for each specific ASCO Series 300 ATS Use the ATS only within the limits shown on this nameplate Catalog Number Indentification A typical Catalog Number is shown below with its elements explained The example is for a G design Series 300 ATS with switched neutral 3 pole 2000 amp 480 V in a Type 1 enclosure G300 3 2000
14. Push Button Status Light SET ENGINE r 1 EXERCISER pinke rapaly set exercise period Excicise is generator bee and hod Ekoa O every week at this time hereafter blinks slowly r Generator starts and runs 2 reloeee 00 00 rrise Period now active the load transfers to Emergency The load retransfers to Normal then BO Ta kS ROMY cancel active exercise period generator runs for 5 minute cooldown bestest light blinks slowly during cooldown 4 stays on generator off Exerciser enabled repeats every 7 days NOTE Every time SET ENGINE EXERCISER push button is pressed held 5 seconds the exercise period is changed 5 1 CONTROL FEATURES continued OPTIONAL PROGRAMMABLE ENGINE EXERCISER Accessory 11CD The optional programmable engine exerciser provides seven days of different exercise periods The timer is connected and mounted below the controller A permanent backup battery maintains the setting when power is lost to timer output switch deenergizes DIP Switch Settings S1 DIP 52 DIP FUNCTION SWITCH SWITCH Opt Timer Actuator Actuator Enabled 7 off 3 5 off re a Opt Timer Actuator Actuator Disabled 7 off Ul 50n al Exercise without ACUa or Sua Load ki Exercise with ace Load ks Shaded DIP switches are standard factory settings 5 2 The Accessory 11CD Programmable Engine Exerciser incorporates a 7 day time base a
15. RGENCY Transfer Switch Test T Press and hold the door mounted TRANSFER SWITCH TEST button until the engine starts and runs This should happen within 15 seconds The transfer switch will operate to the Emergency position If the Transfer To Emergency Delay is used the transfer will occur after a time delay up to 5 minutes For immediate transfer press BYPASS TIME DELAY button The Transfer Switch will operate back to the Normal position after the Retransfer To Normal Delay up to 30 minutes For immediate retransfer press BYPASS TIME DELAY button Unloaded Running Engine Cooldown Delay allows engine to run unloaded for 5 minutes Clean and inspect the switch once a year De energize all sources then brush and vacuum away any excessive dust accumulation Remove the transfer switch barriers and check contact condition Replace contacts when pitted or worn excessively Reinstall the barriers carefully Maintain transfer switch lubrication The transfer switch has been properly lubricated and under normal operating conditions no further lubricating is required Renew factory lubrication if the switch is subjected to severe dust or abnormal operating conditions Relubricate the operator if TS coil is replaced Order lubrication kit 75 100 Replacement parts Replacement parts are available in kit form When ordering parts provide the Serial N
16. Sensor Adjustments A WARNING Voltage and frequency sensor pickup and dropout points are set to customer specifications if none specified Any change in these settings may affect the tandard factory settings are used To change a setting normal_operation of the automatic transfer Serine eee PANON switch This change could allow the load circuits follow procedure on page 4 2 Use Tables4 2 and 4 3 for to remain connected to a low voltage source settings and corresponding DIP switch actuators Table 4 2 Voltage and Frequency Settings EI Shaded DIP switches are standard factory settings DESCRIPTION LABELS SETTING Zor seminal Stoe FACT SET ADJ RANGE SWITCH 95 Actuator 3 off PU N Pickup 90 90 Actuator 3 on Actuator 1 off idi Actuator 2 off Normal Source Voltage Es Actuator 1 on i Actuator 2 off BON Propout on Actuator 1 off ar RS Actuator 2 on n 5 Actuator 1 on 70 Actuator 2 on R Emergency Source Pickup 90 _non adjustable Voltage Dropout 75 _non adjustable Pickup 95 nonadjustable Dropout 5 _non adjustable Emergency Source Frequency PA 60 Hz Actuator 4 off l 60 50Hz 60Hz Hz 50 Hz Actuator 4 on o 3 phase Actuator 6 off o Voltage Phases 30 10 30 10 30 1 phase Actuator 6 on o Tf dropout voltage is set to 90 the pickup voltage must be set to 95 Ta
17. aded DIP switches are standard factory settings Eross to cancel an p ea Cae status light ERAT Press and hold for 5 sec or until status stops generato 1 o light blinks rapidly to set exercise period If Exercise with Load is set Eer A immediately and every week hereafter retransfers load to Normal generator starts then stops generator after If Exerciser with Load is set 5 min cooldown Figure 5 1 Operator panel pushbuttons and light transfers load to Emergency Select below either Exercise without Load or Exercise with Load according to the setting of DIP switch S1 actuator 8 The load transfers from the Normal source to Emergency source generator and back again if Exercise with Load is selected Exercise without Load DIP Switch S1 Actuator 8 off a How to Set Built In Timer Step Function Explanation Push Button Status Light SET ENGINE 1 EXERCISER snoa pid set exercise period Exercise the generalon e and hold GaS O every week at this time hereafter blinks slowly A 7 2 release 20 00 exercise period now active Generator starts and runs press BYPASS 7 3 TIME DeLay stayson cancel active exercise period Generator stops 4 stays on generator off Exerciser enabled repeats every 7 days Exercise with Load DIP Switch S1 Actuator 8 on How to Set Built In Timer Step O Function Explanation
18. ansfer switch is now supplying the load from the emergency source The transfer switch will remain in the Emergency position until the normal source is restored If the Transfer Switch Terst button is used the transfer switch will remain on emergency until the retransfer to normal delay times out 2 1 pees TES Start the engine active exercise period 20 min engine exercise and relay NR begins its generator and to stops engine now or period immediately engine timing cycle 1 or 3 transfer the load after cooldown See starts and weekly thereafter See page 5 1 for complete instructions T Hold 5 sec to set Figure 2 1 Membrane controls and indicator lights Retransfer to Normal The sequence for load retransfer to the normal source automatically begins when the voltage sensor detects restoration of the normal source The voltage level must rise above the preset pickup point on all phases before the sensor will accept the normal source When the normal source is accepted by the sensor relay SE begins its timing cycle adjustable 1 sec to 30 min retransfer to normal delay For immediate retransfer press Bypass Time Delay button SE relay is provided with a time delay on pickup to prevent immediate load retransfer to the normal source The delay insures that the normal source has stabilized before reconnection of vital loads If the normal source voltage falls below the present dropout point before the time de
19. ble 4 3 Transformer Voltage Adjust Low setting shifts all voltage settings down 4 2 for example 240 V to 230 V or 480 V to 460 V g gi 1g pl DESCRIPTION LABELS FACTORY SETTING ADJUSTMENT 53 DIP SWITCH LOW Actuator 2 off v Voltage Adjust 4 2 LONI HI HI Actuator 20n x ADJUSTMENTS A WARNING Do not make any setting changes while the controller is energized How to Change a Setting 1 Prevent the transfer switch from operating by discon necting one source first then the other as follows a If the transfer switch is in the Normal position open the emergency source circuit breaker Turn the engine starting control to off Then open the normal source circuit breaker If the transfer switch is in the Emergency position open the normal source circuit breaker Turn engine starting control to fest or run Then open the emergency source circuit breaker Disconnect both harness plugs from controller by squeezing the latches Do not pull on the wires 3 Remove cover from the controller by releasing latch on right side with your thumb See Figure 4 1 4 Locate the appropriate adjustment potentiometer or DIP switch for the setting that you want to change Refer to Table 4 1 and Table 4 2 on page 4 1 and Figure 4 2 Figure 4 3 Figure 4 4 on page 4 2 5 Use a small screwdriver to turn the potentiometer clockwise to increase the time delay or counterclock wise to decrease it See F
20. e applicable enclosure outline drawing fur nished with this switch and mount the Series 300 according to details and instructions shown on diagram INSTALLATION Auxiliary Cable Box for 1000 2000 amp An auxiliary cable box is required if the power cables do not enter the enclosure directly adjacent to the terminal lugs for example if all power cables enter the top or bottom Order ASCO part no 609027 if needed A Do not route the power cables along the sides of the Transfer Switch CAUTION Line Connections Refer to the Wiring Diagram provided with your Series 300 ATS All wiring must be made in accordance with the National Electrical Code and local codes It is unneces ary to remove pole covers from the transfer switch If you do remove them reinstall them carefully A DANGER De energize the conductors before making any line or auxiliary circuitry connections Be sure that Normal and Emergency line connections are in proper phase rotation Place engine gen erator starting control in the OFF position Make sure engine generator is not in operation Testing Power Conductors Do not connect the power conductors to the ASCO Series 300 transfer switch until they are tested Installing power cables in conduit cable troughs and ceiling suspended hangers often requires considerable force The pulling of cables can damage insulation and stretch or break the conductor s strands For this reason
21. igure 4 3 6 Use a ball point pen or similar pointed tool to slide the switch actuators left or right so they match the il lustration next to the setting left off right on Recheck the setting See Figure 4 4 7 Install the cover on the controller by hooking it on the left side and latching the right side 8 Reconnect both harness plugs to the controller by aligning and pressing straight in until latches click A WARNING Close the enclosure door 9 Close the enclosure door then restore both sources a If the transfer switch is in the Normal position first close the normal source circuit breaker then close the emergency source circuit breaker If the transfer switch is in the Emergency position close the normal source circuit breaker The load will be automatically retransferred to the normal source Then close the emergency source circuit breaker 10 Turn the engine starting control to automatic 4 2 continued cover hook on left side lt 9 volt alkaline battery harness batten Plugs jumper te etranster 2 to normal time delay S3DIP 4 transfer to switch emergency time delay S1 DIP switch Figure 4 2 Location of potentiometers clockwiseto g Aa increase Piorp2 t potentiometer counterclockwise to decrease Figure 4 3 Changing time delay potentiometers DIP switches swt sw2 sw3 actuator 8 on each DIP switch off lt gt on
22. ing delay keeps the generator running for g 5 minutes cool down period AVAILABLE Then the generator should stop NORMAL and the Emergency Source EMERGENCY Available light should go off SECTION 2 SEQUENCE OF OPERATION lights show position of transfer switch lights show the sources available Transfer To Emergency light for built in The sequence for load transfer to emergency source begins automat ASGO la nna engine exercise timer blinks rapidly when button is held 5 sec cally when normal source voltage 7 THe bonigest falls below the preset dropout point TOAD SOURCE eae ar Se sfer Switci si CONNECTED TO LABLE i or when Transfer Switch Test button NORMAL ce NORMAL button is released set is pressed An under voltage condi EMERGENCY 8 EMERGENGY and during 20 min tion on any phase of the normal exercise period stays on after engine stops exerciser is e enabled for weekly source is detected by the sensor When the normal a source voltage fails or m operation the Transfer Switch Test Ji button is pressed the T T SE relay de energizes Hold 15 sec to Press to cancel the seconds momentary to emergency page 5 1 normal source outage delay The NR relay is provided with a time delay on dropout to override momentary outages and prevent nuisance sta
23. ircuit breaker TROUBLE SHOOTING Note the control features that are activated or furnished on the switch and review their operation Refer to Section A WARNING 5 Control Features Proceed with care The automatic transfer switch is energized Table 3 1 Trouble Shooting Checks PROBLEM CHECK IN NUMERICAL SEQUENCE 1 OPERATION 2 GEN SET 3 VOLTAGE Gen Set does not start when the TRANSFER SWITCH TEST button is pressed and held for 15 seconds or when the normal source fails Hold the TRANSFER SWITCH TEST button 15 sec or the outage must be long enough to allow for the 1 or 3 sec Momentary Normal Source Outage Delay plus engine cranking and starting time Starting control must be in automatic position Batteries must be charged and connected Check wiring to engine starting contacts Transfer switch does not transfer the load to emergency source after the gen set starts Wait for Transfer to Emergen cy Delay 0 to 5 min to time out For immediate transfer press the BYPASS TIME DELAY button If Motor Load Transfer is active wait for in phase condition see below Generator output circuit breaker must be closed Generator frequency must be at least 57 Hz Voltmeter should read at least 90 of nominal phase to phase voltage between transfer switch terminals EA and EC or EL1 and EL2 for 2 pole switches These are factory settings Transfer switch does
24. lay expires the timing cycle is reset to zero If the emergency source fail for more than 4 seconds during the timing cycle ER relay drops out and the load is immediately retransferred to the normal source if that source is acceptable SE relay energizes and ER relay is dropped out The TS coil is energized the transfer switch operates and all switch contacts mains controls auxiliaries reverse position The transfer switch is now supplying the load from the normal source again Upon retransfer to the normal source NR relay begins its timing cycle unloaded running delay engine cooldown NR relay is provided with a 5 minute time delay on pickup to keep the engine running for a cool down period NR relay energizes after the time delay and signals the engine driven generator to shut down All circuits are reset for any future normal source failure Activation of standard control features shown in Section 5 will alter the sequence of operation and introduce additional time delays during transfer operations SECTION3 TESTING amp SERVICE PREVENTIVE MAINTENANCE Reasonable care in preventive maintenance will insure high reliability and long life for the automatic transfer switch Operate the switch at least once a month Perform this four step Electrical Operation Test This is a test with load transfer ASCA LOAD SOURCE CONNECTED TO AVAILABLE NORMAL NORMAL EMERGENCY EME
25. manual 1 3 illustration of 1 3 warning 1 3 sequence of 2 1 P parts 3 1 problem 3 2 programmable engine exerciser 5 2 R rating label inside cover remote control features 5 4 bypass transfer time delay 5 4 inhibit transfer to emergency 5 4 remote test 5 4 remote transfer to emergency 5 4 replacement parts 3 1 S set engine exerciser 5 1 settings changing 4 1 factory 4 1 frequency 4 1 phase 4 1 time delay 4 1 voltage 4 1 T terminal block 1 2 test functional 1 3 1 4 1 5 time delay adjustment 4 1 gen set cooldown 4 1 how to change 4 2 override momentary outages 4 1 settings 4 1 transfer to emergency 4 1 transfer to normal 4 1 timer plant exerciser how to set 5 1 transfer switch test 14 3 1 trouble shooting 3 2 inphase monitor 5 4 Vv voltage phase 4 1 voltage pickup and dropout settings 41 1001 ASCO Power Technologies L P
26. n The load should retransfer back to the normal source after the Retransfer to Normal Delay if used The retransfer should occur when the needle is near 0 volts If retransfer does not occur after the time delay the Motor Load Transfer feature is not operating 5 For immediate retransfer press the BYPASS TIME DELAY button Then disconnect the voltmeter lated to circuits on the controller or the transfer switch call your local ASCO Power Technologies sales office Furnish Serial No Bill of Material BOM No amp Catalog No from the transfer switch nameplate 3 2 SECTION 4 ADJUSTMENTS Time Delay Adjustment To change a setting follow procedure on page 4 2 Use Standard time delays are set to customer specifications Table 4 1 as a guide to time delay values and their corre if none specified standard factory settings are used sponding adjustment DIP switch or potentiometer Table 4 1 Time Delay Settings FACTORY ADJUSTMENT 3 DIP ADJUSTMENT pee LABELS SETTING RANGE SWITCH POTENTIOMETER second Actuator 1 on yOveride Momentary DES 3 seconds lormal Source Outages 3seconds Actuator 1 off S TIMER O minutes 0to5 Transfer to Emergency TNE ill cow ines P2 Soe Momina 4seconds non adjustable Emergency S Outages TIMER 30minutes 1 second to Retransfer to Normal TEN ull ow eo esri P1 Unloaded Running Engine Cooldown 5 minutes non adjustable
27. nd therefore each day of the week can be uniquely programmed to test the engine generator set either with or without load The proper controller settings must be made to determine whether or not the test will be conducted with or without load refer to page 5 1 for proper selection For convenience Block Programming is also provided whereby up to seven days can be grouped together if the ON and OFF times are the same E See next page for instructions on setting the timer CONTROL FEATURES continued How to Set Optional Programmable Engine Exerciser Accessory 11CD A WARNING Proceed with care The automatic transfer switch is energized Setting the Clock Time and Day Step Press Button Display Meaning 1234567 blink i eae O00 after self test oO clears memory 2 holdh then 1234567 military 24 hr press 1h AM 1200 or AM PM 1 12 hr time Note Repeat step 2 to toggle between military blank display and AM PM time hold 1234567 blink hold while 3 clock symbol 0000 setting thru oO step 7 1h once do nothing if it 4 Gf Daylight 1h is Standard Saving Time Time 5 Ti hold for 00 00 hour fast count 6 j hold for 10 00 minute fast count Day Mo Tu We Th Fr i Sa Su apy 8 release blinking time amp dals set clock starts Programming Engine On Off Period s Step Press Button Display Meaning bio ey trato
28. ns are located on terminal block TB which is mounted on the front lower left of the transfer switch Refer to wiring diagram provided with the Series 300 ATS and connect the engine start wires to the appropriate terminals See Figure 1 1 and Table A Table A Engine start connections When normal Terminals on source fails transfer switch contact closes TB1 and TB3 contact opens TBI and TB2 Auxiliary Circuits Connect auxiliary circuit wires to appropriate terminals on transfer switch terminal block TB as shown on the wiring diagram provided with this Series 300 Automatic Transfer Switch Make the necessary auxiliary connections by referring to Section 5 Control Features Load Disconnect Programmable Harnesses The transfer switch is connected to the left side of the controller by a plug in harness two plugs ge eee aaa 212 EI Bll F S 7 12 12 aia SEN 7 2l mri ISS LO ir a Engine Starting Signals 5 amps 32 V DC 5 amps resistive 28 V DC oF 120 V AC max TS Auxiliary Contacts Feature 14A amp 14B 10 amps 32V DC 10 amps 250 VAC general purpose TB Terminal Block m n r eld connections pti accepts wire range o lt 22 12 AWG 2 F an E EEE E E et O al 4 O ae Te 2 Se pe 2 Bs Bs q qi q L ss g sioa
29. nsformer A accessories 5 2 5 3 5 4 5 5 auxiliary circuits 1 2 barriers 1 3 battery 4 2 5 1 buttons push 3 1 bypass time delay 1 4 2 1 3 1 c cable lugs 1 1 preparation 1 1 spacers 1 1 illustration of 1 1 catalog number inside cover cleaning 3 1 connections engine control contact 1 2 line 1 1 conact position indicators 1 3 control features 5 1 load disconnect 5 4 motor load transfer 5 4 plant exerciser 5 1 controller control panel 4 1 4 2 codes cover cover removal 4 2 disconnecting 3 1 time delay potentiometers 4 2 D DIP Switches 4 1 4 2 5 1 5 2 5 4 E electrical operation 1 4 engine exerciser 5 1 5 2 5 3 engine starting contacts 1 2 Printed in U S INDEX F failure see trouble shooting 3 2 features see control features frequency pickup and dropout settings 4 1 functiona testl 1 3 1 4 1 5 H harness 1 2 disconnect plugs 3 1 inphase monitor 5 4 inspection 3 1 installation 1 1 insulator backing piece 1 1 illustration of 1 1 warning 1 1 L labels engine starting contacts 1 2 inputs outputs 1 2 rating cover lights 1 4 5 1 load disconnect feature 5 4 maintenance preventive 3 1 manual load transfer 3 2 warning 3 2 manual operation 1 3 illustration of 1 3 warning 1 3 motor load transfer feature 5 3 N nameplate cover 0 operation electrical 1 4
30. o and Catalog No from the transfer switch nameplate Contact your local ASCO Power Technologies sales office DISCONNECTING THE CONTROLLER The harness disconnect plugs are furnished for repair purposes only and should not have to be unplugged If the controller must be isolated follow these steps carefully Disconnecting the Plugs A WARNING Do not unplug the controller until step 1a or 1b below is completed 1 Observe the position of the transfer switch a If the transfer switch is in the Normal position place standby engine starting control in the off position Then open the emergency source circuit breaker If the transfer switch is in the Emergency position open the normal source circuit breaker Place the engine starting control in the test or run position Separate the quick disconnect plugs by squeezing the latches Do not pull on the harness w 3 Label remove and tape the signal wires connected to the engine start terminals on the transfer switch TBI and TB3 or TBI and TB2 Reconnecting the Plugs A WARNING Do not reconnect the controller until step 1a or 1b and 2 below are completed 1 Observe the position of the transfer switch a If the transfer switch is in the Normal position be sure that the standby engine starting control is still in the off position The emergency source circuit breaker still should be open If the transfer switch is in the Emergency positi
31. on normal source circuit breaker still should be open 2 Reconnect the signal wires connected to the appropriate engine start terminals on the transfer switch See Section 1 Engine Starting Contacts 3 The harness plugs and sockets are keyed Carefully align the plugs with the sockets and press straight in until both latches click Restore the opposite source as follows a If the transfer switch is in the Normal position place the standby engine starting control in the automatic position Then close the emergency source circuit breaker If the transfer switch is in the Emergency position close the normal source circuit breaker The load will be automatically retransferred to the normal source after the Retransfer to Normal Delay For immediate retransfer press BYPASS TIME DELAY button Place the engine starting control in the automatic position TESTING amp SERVICE continued MANUAL LOAD TRANSFER 1 Open normal and emergency source circuit breakers This procedure will manually transfer the load if the controller is disconnected 2 Use the maintenance handle to manually operate transfer switch to the opposite source See page 1 3 Manual Operation Test A WARNING Do not manually operate the transfer switch 3 until both power sources are disconnected i open both circuit breakers If the transfer switch is in the Emergency position manually start the engine generator and then close the emergency source c
32. pring fully compressed See Figure 1 3 and 1 4 and Table B If the transfer switch is closed on Normal window shows CLOSED grasp handle firmly and tum it counterclock wise The transfer switch should operate smoothly without binding If it does not check for shipping damage or construction debris Turn the handle clockwise to return the transfer switch to the Normal position Observe that the window indicators left side show the top shaft OPEN and the bottom shaft CLOSED Note If Normal and Emergency connections are reversed this operation is also reversed Remove the maintenance handle and hub and store it on the frame in the place provided A WARNING Verify that the maintenance handle and hub have been removed before proceeding Now continue to 2 Voltage Checks on next page clockwise DOWN closes the Normal source contacts lower and opens the Emergency source contacts upper and maintenance handle operation INSTALLATION continued ASTD soes j C an Park NJ 07902 USA LOAD SOURCE 3 CONNECTED TO AVAILABLE observe these lights NORMAL NORMAL L EMERGENCY EMERGENCY Figure 1 5 Standard controls and indicators 2 Voltage Checks Close the normal source circuit First check nameplate on transfer switch rated voltage breaker The Transfer Switch SOURCE must be the same as normal and emergency line voltages 1
33. r begin 2 hand on 3 h start hour 4 m start minute start engine 5 Day start day Note Successive pressing displays blocks of days Mon Sat Mon Fri Sat amp Sun 1 is Monday 6 Prog 1234567 begin ale gal e or 8 h stop hour 9 m stop minute stop engine 10 Day stop day 1 blinking program set 5 3 on off button reset button eth nor 4 button program ene e progra AAA hour t button 2 dock minute button OW O Patton day button Figure 5 2 Exerciser display and push buttons Changing or Checking Time Programs By operating the Prog button the individual commands as programmed can at any time be brought consecutively into the display for revision or checking Revisions are accomplished by programming over the existing programs using the steps at the left Canceling Time Programs After the selecting the desired program use the h and m buttons to set hours and minutes to zero the will be displayed This program has been made ineffective and will no longer be carried out To cancel all programs press the Res reset button This clears all memory including the time base and program storage Manual Override A WARNING Do not manually override the exerciser unless you are sure that the controller has been set for exercise without load see page 5 2 Failure to do so could result in possible injury if the transfer switch operates while the enclosure door is open
34. rting of the engine driven generator If the normal source voltage returns above the sensor dropout setting before the time delay expires the NR relay timing cycle is reset to zero and relay SE energizes If the normal source voltage does not return above the sensor dropout setting before the time delay expires the NR relay de energizes and signals the engine driven generator to start At the same time a voltage and frequency sensor begins monitoring the emergency source The sensor will accept the emergency source only when both voltage and frequency reach preset pickup points Usually about ten seconds elapse from dropout of the NR relay to acceptance by the sensor This time span occurs because the engine driven generator must crank start and run up to nominal pickup points For this reason if the Transfer Switch Test button is pressed it must be held for 15 seconds If the emergency source is available immediately the sensor may accept it as soon as NR relay drops out When the emergency source is accepted by the sensor relay ER begins its timing cycle transfer to emergency delay ER relay is provided with an adjustable 0 to 5 minutes time delay on pickup to delay transfer of the load to the emergency source For immediate transfer press Bypass Time Delay button ER relay energizes the TS coil is energized the transfer switch operates and all switch contacts mains controls auxiliaries reverse position The tr
35. tarting AAL control selector switch on the aes generator set in the automatic SMEEENY position Close enclosure door Now continue to 3 Electrical Operation on next page INSTALLATION continued ASTD iona suta rora wrez LOAD SOURCE CONNECTED TO VAILABLE LA NORMAL NORMAL EMERGENCY EMERGENCY press this button THORSEN SATON TEST BPRS THE DELAY SE GRE DERE Figure 1 6 Standard cor 3 Electrical Operation First check nameplate on transfer switch rated voltage must be the same as normal and emergency line voltages A CAUTION Verify that the feeders have been connected to the proper lugs DANGER Use extreme caution when using a meter to measure voltages in the following steps Do not touch power terminals shock burns or death could result Perform steps 1 through 8 at the right Observe the status lights See Figure 1 6 Black circle means light is on O White circle means light is off NOTE If Motor Load Transfer feature is activated then transfer may not occur immediately after the respective time delays Transfer will only occur when the phase relationship between sources is correct This completes the Functional Test of the ASCO Series 300 Automatic Transfer
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