Sag Simulator User Manual
Contents
1. 140 5 51 Without brackets mm Note 2 150 5 90 With brackets inches Mounting holes 2 x 6 0 25 4 Ordering Stock No 163 Description Housed Bypass Switch 40A Page 18 Voltage Sag Simulator User Manual Notes ETE Voltage Sag Simulator Rev 1 3 November 6 2003 LPW Page 19 User Manual Voltage Sag Simulator For use with all DPI s amp VDC s 120 208 240V 50 60Hz Voltage Dip Proofing Inverter A typical DPI connection diagram Measurlogic Inc DIP PROOFING 2200 Chambers Road Aurora CO 80011 USA TECHNOLOGIES V INC Tel 303 364 4368 Fax 425 799 4780 E mail info measurlogic com LEADERS IN VOLTAG E DIP PROOFING web www measurlogic com2. SAG SIMULATOR MODEL S T 311mm 12 24 Fig 9 Dimensions of the Sag Simulator in mm inches Page 16 Voltage Sag Simulator User Manual Accessories Housed Bypass Switch 10A 1 Description Where no break maintenance is required a by pass switch must be installed It connects the supply directly to the load Bypass position and disconnects the power terminals of the inverter without interrupting the supply When in DPI position the load is connected to the supply via the inverter 2 Specifications Maximum Current 10A Maximum voltage 500Vac Enclosure Extruded Aluminium Dimensions Length 143 5 63 Width 150 5 90 Height 140 5 51 Mounting 2 M6 holes Mass 0 72kg 1 58lbs For use with DPI models DPI52S25 12 DPI52S25 23 DP52S50 12 DPI52S50 23 DPI52L1K12 DPI52L1K 23 3 Mechanical outline L sjeje 5 m 11213 ET Tal 000 0 87 22 0 or VDC 4 gt Line in gg out S Common Line 2 lt a 3 BE Ly e 5 Line in Common Ling Line out Supply Load D amp amp To Supply DOGO 11213 ale Note
3. Note If an error message is displayed and the Simulator shuts down please refer to Error conditions at the end of this section on page 10 4 Press the key twice to select Soak Test then Press the key to reach the Soak Test menu the display will show Page 8 Voltage Sag Simulator User Manual 6 4 6 4 1 6 5 8 1 8 2 8 3 8 4 8 5 The Sag Depth may be adjusted using the Variac prior to performing the test The value is shown on the Voltage readout Stored values are used for INT Interval between consecutive dips initial default 10 seconds SDUR Duration of the first test dip initial default 100ms EDUR Duration of the last test dip initial default 1000ms STEPS Number of steps between first dip amp last dip initial default 200 Each step consist of a series of 20 dips The first dip starts at zero crossing the next dip is delayed by the period of the supply frequency divided by 20 Subsequent dips sweep through a complete cycle with increasing delays after zero crossing Note that the values shown above are factory settings for first use When parameters are set up for a test the new values are stored and will become the default values for the next test Press the key to Start Test or press the key to return to the Soak Test menu To set the Soak Test Parameters to values different to the defaults navigate to the Soak Test menu press the v key to select Set Paramete
4. 4 161p 1USUS108Q nusu KON aaoge o 161P juawaJou nuew XON bd ye 161p snoineld fuad EN Bu D 161P 1X N nist IXON 4 anjen 195 pg di Bes jo uoyeinp 10 skejdsiq 08S 10 skejdsiq J01S UO 18M0d 988 104 S ejdsiq Page 7 Voltage Sag Simulator User Manual Variac Output 1 Output direct from variac At times it is convenient to have a variable AC supply available The Sag Simulator can be programed to connect the variac output to terminal 3 In this mode the output voltage is set by the variac and is available continuously the set value is indicated on the display The output is overload and short circuit protected To enable direct variac output navigate to the Function Select Menu Select Variac Output and press the key The display will show 2 To exit Variac Output mode first set the variac output to zero and disconnect the load Then switch the Sag Simulator off and then on to reset to normal operation Soak Test Follow the steps outlined below to set up and operate the Soak Tester Refer to Fig 4 on page 11 for information on menu layout and programming key functions 1 Connect the supply Voltage Dip Proofing Inverter or Voltage Dip Compensator Bypass Switch and load to the Sag Simulator as shown in Fig 8 page 15 2 Set the variac to zero output and the Bypass Switch to Inverter in circuit 3 Switch on the power to the Sag Simulator the display will show
5. 104 sKejdsig HEuJ2 0JJ 19 S8 YEOS age vonoun Aay Buiuuej6044d b big yes UO 18M0d 08S g 104 S RIdsig 08S 10 skejdsig Page 11 Voltage Sag Simulator User Manual Simulated Sag Profile ER ET E T T D T T T T T T a FI T i T T T I T T T T T T Y 4 TG HR T T lt Sag Duration 60ms 54300 Positive zero 4 3 crossing Sag Depth e n 96 Z 200 d Voltage li T 110Vrms 100 d 0 Pirai rr dpi ee SEN FEER EET Nee E Eri dr d nr 100 200 Sag Delay 5ms 300 4 A Supply voltage 220V 50Hz Sag Simulator output pop era Jr t Far pop Pep eg Per cuo et Top Ne or pop apo ey 0 10 20 30 40 50 60 70 80 90 100 Time ms C T T T T T T T T T T T TT T I A T T T I T T T T Tx T T T T T T T T T T r o L E 4 a Sync pulse output Terminals 4 amp 5 l 05 T gt B _ i 0 En ria ee frr rar ft Amplitude 5V Duration 60mS Sag Duration 5 E q ie li pa L r FM ge and pia E en Ke den be Pe 0 10 20 30 40 50 60 70 80 90 100 Time ms Fig 5 Profile of simulated sag output amp sync pulse from simulator Hu L o CC el Xa l c c Page 12 Voltage Sag Simulator User Manual Sag Simulator Specifications AC INPUT SUPPLY Supply voltage Maximum input voltage Full load current VARIAC CONTROL Variac range Maximum power Maximum continuous curre
6. displayed Adjust the variac to the desired Sag Depth value The value may be adjusted at any time during testing ETL Voltage Sag Simulator Page 9 User Manual 9 Start Test When the parameters have been set navigate back to the Soak Test menu by pressing the 4 key Press the key to reach the Start Soak Test menu Set Voltage will flash use the variac to adjust the Sag Depth voltage see 8 5 above Start the Soak Test by pressing the key The display will show 10 Press the gt key to stop the test and return to the Soak Test Menu If no action is taken testing will resume in 30 seconds 11 When the test is complete the total number of dips are displayed Press the gt key to return to the Soak Test Menu Start up error conditions 1 Error conditions The simulator will perform a power on test to check the supply frequency and the load current If the supply frequency is not 50 or 60HZ or if there is an overload then one of the error messages below will be displayed or When an error condition is detected the simulator will shut down automatically and the error message will remain on the display Check the test setup for the source of the problem To reset the simulator switch the power off and then back on again MM Page 10 Voltage Sag Simulator User Manual en ID 9 oqe 1 61p 1ueu949U nuaw xon Y 9 ubip snolAdid ei MEN gt 6 BIP 1x9N Prior anjea 195 cC SO
7. the next test 7 Press the key to Start Test or press the key to return to the Sag Simulator menu 8 To set the Sag Parameters to values different to the defaults navigate to the Sag Simulator menu press the v key to select Set Parameters then press the key to reach the adjustment menus The Sag Depth is set using the variac and then the interrupt timer should be programmed to set the position and duration of the voltage sag to be generated The three parameters are adjusted as follows 8 1 Set Sag Depth At the Set Sag Depth Menu press the gt key to reach the Adjust Variac menu Adjust the variac until desired voltage is indicated on the display 8 2 Set Sag Delay position after a positive zero crossing At the Adjust Variac menu press the key to select the Set Sag Delay menu Press the key to program the Sag Delay value Use the gt and keys to select the digit to adjust The active digit will flash Use the keys to increment or decrement the digit to the desired value 8 3 Set Sag Duration From the Set Sag Delay menu press key to select the Set Sag Duration menu Press the key to program the Sag Duration value Use the and keys to select the digit to adjust The active digit will flash Use the v keys to increment or decrement the digit to the desired value 9 Start Test When the Sag Voltage Delay and Duration have been set navigate back to the Sag Simulator menu by pressing the 4 key Press t
8. 1 NS Dimension units es E 140 5 51 Without brackets mm Note 2 150 5 90 ol With brackets inches Mounting holes 2 x 6 0 25 9 4 Ordering Stock No 187 Description Housed Bypass Switch 10A FCT Page 17 Voltage Sag Simulator User Manual Accessories Housed Bypass Switch 40A 1 Description Where no break maintenance is required a by pass switch should be installed It connects the supply directly to the load Inverter Bypassed position and disconnects the power terminals of the inverter without interrupting the supply When in Inverter in circuit position the load is connected to the supply via the inverter 2 Specifications Maximum Current 40A Maximum voltage 500Vac Enclosure Extruded Aluminium Dimensions Length 173 6 81 Width 152 5 90 Height 142 5 59 Mounting 2 M6 holes Mass ikg 2 2Ibs For use with models DPI52L2K12 DPI52L3K23 DPI52L3K12 DPI52L4 5K23 3 Mechanical outline I 3 elele de ES 11213 SE EEG b To DPI 000 orVDC Line in Ls out o Common Line ei g n E 8 C D E a e g Line in CommoniLine Line out Supply Load 3 To Supply Q gt As Note 1 11213 92 I Dimension units SEE r
9. 941Q Ul BLAU ouis Sv elzit i J u Aul 0 L peo7 Ajddns i uolb uuoO Jelele jno our ul eur 3 eur UOWWOD i ee E T HEIS d HEIS 20 o P punoo T e dois dois dois fag eif Union he Tn E 3 E E E Jeyuenu Buljooid dig ebeyoA amp gb eg za Lg SSI90TONHISL A e SNIHOOMNd JId Jojejnwis Bes abejon OOOO EEEL Rep E i Oena PETEERE 1S6 JOPUN peo 10 811USD 0J1u02 10104 ONTAOOUd dId Voltage Sag Simulator User Manual Mechanical Outline 311mm 12 24 gt 298mm 11 73 gt DIP PROOFING TECHNOLOGIES VING Y 8mm 0 31 Tj O O lt V p Voltage Sag Simulator A e wo e E E o 3 Line in Line out O Supply B Load Q I 1 11213 um x DE out 5V Y DATEMFG
10. User Manual Voltage Sag Simulator For use with all DPI s amp VDC s 120 208 240V 50 60Hz DIP PROOFING TECHNOLOGIES VING LEADERS IN VOLTAGE DIP PROOFING User Manual Contents Introduction to the DPl 3 Theory of DPI operation 3 Description Voltage Sag Simulator 4 NR a e ERR SA ans EE LEM ES ee 5 Sag Simulation 5 Varlac Output u uu uuu us rea eres lebe 8 Joc 8 simulated Sag Profiles et ee dd 12 Sag Simulator Specifications 13 Sag Simulator block diagram 14 Controls amp indicators Se 14 Typical test Setup sa Jr 15 Mechanical Outline 16 A ei eei ut ovra eren E A 17 Notesi ar EP 19 _oBBnauaoQaO QQ o oo____JJJJJJJJJAAAAANAAAAAKAAAA Page 2 Voltage Sag Simulator User Manual Introduction to the DPI The reliability of electrical power to industry is in general very high nevertheless brown outs and short power interruptions or voltage dips occur These instabilities are caused by short circuits lightning strikes on overhead power lines and heavy load switching The duration of such faults is generally shorter than one second Most plant can ride through such volta
11. ariac is indicated on the LCD display 3 A variable interrupt timer that is used to set the duration of the voltage sag and the point in the cycle at which it begins Both variables are set using the programming keys and are indicated on the LCD display Refer to the menu flow chart and programming key function table in Fig 3 p7 for Sag Simulation page 8 for Variac Output and Fig 4 p11 for Soak Test Operation Sag Simulation Follow the steps outlined below to set up and operate the Sag Simulator Refer to Fig 3 on page 7 for information on menu layout and programming key functions 1 Connect the supply Voltage Dip Proofing Inverter or Voltage Dip Compensator Bypass Switch and load to the Sag Simulator as shown in Fig 8 page 15 2 Set the variac to zero output and the Bypass Switch to Inverter Bypassed 3 Switch on the power to the Sag Simulator the display will show Note If an error message is displayed and the Simulator shuts down please refer to Error conditions at the end of this section on page 10 4 Press the gt key to reach the Sag Simulator menu the display will show Voltage Sag Simulator Page 5 User Manual 6 The Sag Depth may be adjusted using the Variac prior to performing the test The value is shown on the Voltage readout In this case preset values are used for Sag Delay 5ms amp Sag Duration 100ms The simulator will store the values used for the last test and use them as the defaults for
12. block diagram Controls amp indicators DIP PROOFING TECHNOLOGIES V INC FRR ETEBH AE Common Line Line in C Supply a li Load C Ir 12 31 Fig 7 Controls amp indicators Page 14 Voltage Sag Simulator User Manual Typical test setup wesbelp UONJSUUOD JOJEINWIS BES 8 big Page 15 o dul UOWLWOJ eui UOWWOJ peo7 noyz 80z 031 Aiddns mo aun u aun o o Aiddns og S e 9 zo t9 uonoeuuog z NN IL H i B 2 I i HOUMS 33 oopenu xoopieju yoouequy ssed g Bs T i pesnoH amp AS ino o 11N
13. ge dips by virtue of their mechanical and electrical inertia However this is not the case with electrically held in contactors and relays that control the machinery Contactors typically drop out from 5ms to 20ms after power is removed Each short voltage dip now becomes a power failure and the plant must be restarted This can be complicated time consuming and costly DIP PROOFING TECHNOLOGIES VOLTAGE DIP PROOFING INVERTERS are designed to maintain the switchgear control voltage during voltage dips effectively keeping the plant connected The stored electrical and magnetic energy is allowed to flow supporting the mechanical inertia of the machinery When the power is restored after a short voltage dip the plant is still running at near synchronous speed the inrush currents will be small and the stress to the system minimal Historically this problem has been addressed by using DC contactors latched contac tors and intelligent controls such as PLC s These systems are complex and expensive and do not provide a solution for equipment already in existence The current approach to this problem has been to employ intelligent control systems which provide a curative solution In contrast the Voltage Dip Proofing Inverter provides a preventative solution Theory of DPI operation The VOLTAGE DIP PROOFING INVERTER is designed to be maintenance free and highly reliable It consists of a static switch in series with and an inverter parallel t
14. he gt key to reach the Start Test menu At this point the variac may be used to readjust the sag voltage The voltage setting will be indicated on the display The supply voltage can be interrupted by pressing the key The effect of the programmed sag can be seen on the unprotected load one or more contactors or relays will drop out The sag profile can be observed using a power monitor or an oscilloscope if these are available The simulation can be tried with various settings sag depth delay and duration as often as desired to pinpoint sensitive components in the control system 10 Test with DPI or VDC in circuit The Bypass Switch should now be set to Inverter in Circuit and the sag simulations repeated to evaluate the effectiveness of using the Voltage Dip Proofing Inverter or Voltage Dip Compensator to harden the controls against momentary sags and interruptions 11 Sync pulse output A synchronization pulse is available at terminals 4 amp 5 This pulse may be used to trigger an oscilloscope in order to display the sag profile The output remains at zero volts until a sag is initiated at which time the output rises to 5 volts and remains at this level until the end of the sag duration period The output then returns to zero volts The sync pulse output is electrically isolated Fe Q o e o OOO AAAAKAKOAAKAKAKAKAKI Page 6 Voltage Sag Simulator MEYIMO J nuau JOJEJNLUIS BES ejqe uonouny Aay Buwwe1ibolq T
15. is accomplished in less than 700us A 3 1 second timer adjustable in increments of 100ms starts timing the inverter out Should the input voltage recover within the set time the inverter supply is synchronized to the mains and the load is switched back to the supply the capacitors are recharged in less than one second and the inverter is ready to compensate for the next voltage dip If the input voltage does not recover within the settime the load is switched back to the supply regardless of the voltage level Description Voltage Sag Simulator The Sag Simulator is intended to be used as a tool to evaluate the effects of momentary voltage sags and interruptions on industrial controls When used in conjunction with a Voltage Dip Proofing Inverter or a Voltage Dip Compensator and Bypass switch it may be used to prove the effectiveness of the DPI or VDC as a solution for these power quality problems The Simulator has two other useful functions that may be selected via the Function Select menu D AP Page 4 Voltage Sag Simulator User Manual a Variac Output that enables direct output from the variac and a Soak Test function that may be used to perform repetitive testing The Sag Simulator is designed for 120 208 240Vac operation The main controls and their functions are listed below refer to Fig 7 page 14 for their locations 1 A variac that is used to set the depth of an under voltage sag condition 2 The sag level set by the v
16. nt Maximum short term current for 3 seconds Overload amp short circuit protection DIRECT VARIAC OUTPUT Variac range Maximum power Maximum continuous current Overload amp short circuit protection SAG DELAY TIMER Range Setting SAG DURATION TIMER Range Setting CONTROLS amp INDICATORS Programming Menu parameter indication SYNC PULSE OUTPUT Amplitude Polarity Electrically isolated output Duration TEMPERATURE Maximum ambient working temperature HOUSING Construction Height Width Depth Mass 120 208 240Vac 50 60Hz 10 20A 0 240Vac RMS 1200VA 120V 2400VA 240V 10A 20A Yes 0 240Vac RMS 1200VA 120V 2400VA 240V 10A Yes 0 00 to 20 00 ms 0 01 ms steps 0 010 to 9 999 seconds 0 001 second steps Four push switches 4 x 20 LCD display 5V Positive Yes Equal to sag duration 45 113 F Extruded aluminium 390mm 15 35in 311mm 12 24in 162mm 6 38in 15kg 33lb n M Voltage Sag Simulator Page 13 User Manual Sag Simulator block diagram 5 INTER H 9 NT GN Gontrols 4 O COOP AE OOOO Sync pulse 4 x 20 Display lt A V Amplitude 5V Duration Sag duration Line Program Switches Static Switch 1 3 Set sag level Supply Static Switch 2 toad Sag voltage Common Fig 6 Sag Simulator
17. o the load Energy is stored in a capacitor bank the inverter block diagram is shown in Fig 1 Static Switch Inverter Supply Load Storage Capacitor Fig 1 Inverter Block Diagram Voltage Sag Simulator Page 3 User Manual The STATIC SWITCH is robust and can withstand large current surges It is ideally suited for contactor operation where high peak currents of short duration occur during energizing The INVERTER is configured as a full bridge with overcurrent and short circuit protection The output waveform is a square wave where the RMS and the peak voltage are the same as for a sine wave as shown in Fig 2 V Fig 2 Inverter stepped square wave output waveform This is important for circuits where magnetic devices such as transformers and contactors RMS voltage are in circuit with electronic relays that derive their DC voltage from capacitor input filters peak voltage The computer grade CAPACITOR BANK operates under ideal conditions being charged to working voltage but carrying no ripple current most of the time During stand by operation the static switch supplies power directly to the load the inverter is switched off and the capacitors are charged to the full operating voltage The supply voltage is constantly monitored for deviations should there be a deviation from Vnom which is greater than the preset value the static switch is switched off and the inverter is activated The switch over
18. rs then press the gt key to reach the adjustment menus Five parameters may be adjusted as follows Set Dip Interval At the Set Dip Interval menu press the key to program the Dip Interval value Use the and keys to select the digit to adjust The active digit will flash Use the w keys to increment or decrement the digit to the desired value Set Start Dip Length t Start At the Set Dip Interval menu press the key to select the Start Dip Length menu Press the key to program the Start Dip length value Use the and keys to select the digit to adjust The active digit will flash Use the a v keys to increment or decrement the digit to the desired value Set End Dip Length t End From the Set Start Dip Length menu press v key to selectthe Set End Dip Lengthmenu Press the gt key to program the End Dip Length value Use the and 4 keys to select the digit to adjust The active digit will flash Use the 4 v keys to increment or decrement the digit to the desired value Set Number of Steps From the Set End Dip Length menu press v key to select the Set Number of Steps menu Press the key to program the Number of Steps value Use the gt and 4 keys to select the digit to adjust The active digit will flash Use the 4 v keys to increment or decrement the digit to the desired value Set Sag Depth The Set Sag Depth is set from the Start Soak Test Menu Set Voltage will flash and the current sag level voltage will be
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