Eaton Power-Sure 700 Instruction Manual
Also see for Power-Sure 700: Installation and user manualInstallation and user manualInstallation and user manual
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Contents
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9Check the SCR snubber cardInstruction manual IM1002004E September 2015 www.powerquality.eaton.comFigure 3. SCR tester6. Re-assemble the power module assembly, make sureall connections are tight.WARNINGDo not connect the semi-conductor fuse, wires or fanwires at this point.Check the SCR snubber card1. Three components make up the SCR snubber—resistors, MOVs, and capacitors. Check for openresistors. Check MOVs for shorts, they should readhigh resistance when ohmmeter is placed across them.Resistance check each capacitor. The DC resistanceacross the snubber capacitor-should look capacitive-that is high resistance after the meter charges thecapacitor. If it measures open or shorted, replace thesnubber card.2. RE-CONNECT SEMI-CONDUCTOR FUSE, ALLWIRES, AND FANS. DOUBLE CHECK THAT ALLCONNECTIONS ARE SECURE.otes:N Control board # 49120 is for 10 kVA to 50 kVA units.Control board # 407415 is for 75 kVA and larger.WARNINGDo not connect TB1, TB2, and TB3 connectors from thecontrol cards #49120/407415 yet.Check control card and filter card1. Verify input to the conditioner matches the unit’sspecification. Also verify correct control board#49120/407415 jumper setup on page 21.2. Disable the over/undervoltage shutdown card #35867(optional card) by removing connectors K1 and K2 onthe card.3. Turn on AC input breaker to unit.IMPORTANTExtreme caution must be taken when measuring voltageson Molex connectors. Do not press meter leads intoconnectors or bend connectors back.4. Measure the following voltages on wires feedingthe TB1 Molex connector to the control card on allthree phases.Pins 1 and 3 = 4–6 Vac.otes:N When the connector is plugged in, this voltage isaround 3 Vac.Pins 7 and 8 = 120 VacIf this voltage is incorrect or not present, then checkthe fuses associated with the filter card or replace filtercard and re-check voltages.5. Turn main AC circuit breaker off. Plug in connectors TB1and TB3 only. On the control card #49120 / 407415 onall three phases.6. Turn main AC on. With DC voltmeter on the millivoltscale, check between TP1 and TP GND of the controlcard and adjust pot P2 so meter reads “0” millivolts orclose as possible.otes:N This step does not apply to control board # 407415.otes:N Refer to page 21 for test points and pot locationson control card.7. Use the following formula to calculate the nextadjustments. You must calculate each input phase foreach control card or a total of three calculations.a. For phase 1 control card, measure AC input at Line 1to Line 2.b. For phase 2 control card, measure AC input at Line 2to Line 3.c. For phase 3 control card, measure AC input at Line 1to Line 3.FormulaAC Input x 2.47 = Volts DC at TP2480 (Nominal)Example475 Volts AC Input x 2.47 = 2.44 Volts DC at TP2480 (Nominal)1K Ω 1 WattSwitch 1 |
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