United Technologies Carrier Transicold 69UG15, Операция и обслуживание

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T-360 4–8
4.7 HIGH VOLTAGE CIRCUIT
Electrical troubleshooting for high voltage control circuit
WARNING
!
Before proceeding with the troubleshooting, make sure to follow your company’s standard
safety procedures for working with electrical components.
ITEM CHECKS POTENTIAL CAUSE
Receptacle (R) Check output voltage at Receptacle R (L1-
L2, L2-L3, L1-L3) (50Hz: 360 - 460 VAC,
and 60Hz: 400 - 500 VAC) Faulty Receptacle (Replace)
High Voltage Wires (from Cir-
cuit Breaker to Receptacle) Check if wires/terminals are connected
(Check Continuity for each leg) Loose connections (Tighten)
Circuit Breaker (CB) Test the output power from Circuit Breaker
CB (21-22, 22-23, 21-23) Faulty Circuit Breaker (Replace),
Circuit Breaker (CB) is in the OFF
position
Verify Circuit Breaker (CB) is in the ON po-
sition
Test the input power to the Circuit Breaker
CB (11-12, 12-13, 11-13)
High Voltage Wires (from Pri-
mary and Boost Contactors to
Circuit Breaker, Voltage Con-
troller, Fuse Blocks, Genera-
tor, and Battery Charger) Check if wires/terminals are connected
(Check Continuity for each leg) Loose connections (Tighten)
Primary (P) or Boost (B) Con-
tactor Visually verify Primary (P) or Boost (B)
Contactor is energized (wait 10-20 seconds
after start-up) Faulty Contactor/Faulty Voltage
Controller/Faulty
Fuses/Faulty
Generator (Replace)
Test the output voltage from Primary (P) or
Boost (B) Contactor (L1-L2, L2-L3, L1-L3)
(50Hz: 360 - 460 VAC, and 60Hz: 400 - 500
VAC)
Test the input voltage to Primary (P) or
Boost (B) Contactor (T1-T2, T2-T3, T1-T3)
(300 - 600 VAC)
Test Voltage between terminals A1-A2 of
Contactors. Engaged contactor (Primary or
Boost) shall be supplied with ~24VDC; Dis-
engaged 0VDC. if Not, check 24VDC circuit/Faulty
Voltage Controller (Replace)if Not,
check 24VDC circuit/Faulty Volt-
age Controller (Replace)