62 Chapter 8 Options
APM 300 Integrated UPS Single Module And Parallel System User Manual
LA
LB
LC
Back view
Base plate
LA
LB
LC
Base plate
Back view
Figure 8-2
Installation positions of inductors
Connections
1. Connect the cables W63, W64 W65, W66, W67 and W68 between the copper bars Q2-A, Q2-B, Q2-C, ZA,
ZB, ZC and the inductors LA, LB and LC, as shown in Figure 8-3. Use six M10
×
30 screws, six flat washers, six
spring washers and six M10 nuts to connect the cables to the inductors, and use the screws and nuts removed
in step 4 to connect the cables to the copper bars.
LB
LA
LC
W64
W63
W65
W67
W66
W68
A
A
Q2-A
Q2-B
Q2-C
ZA
ZB
ZC
LC-B
LB-B
LA-B
LC-A
LB-A
LA-A
A
B
B
B
Q2-C
Q2-B
Q2-A
ZC
ZB
ZA
W65
W64
W63
LC-B
LB-B
LA-B
W68
W67
W66
LC
LB
LA
B
B
B
A
A
A
LC-A
LB-A
LA-A
Figure 8-3
Cable connection
2. Replace the right side panel and close the back door of the UPS.
3. Connect the rectifier input, bypass input, battery input and output load of the UPS.
Maintenance
1. Keep the connections tight.
Tighten all connections in installation and at least annually thereafter.
2. Keep the inductors clean.
Maintain the inductors free of dust and moisture.
3. Keep good records.
Troubleshooting is easier if you have historical background.
8.2.2
Battery Temperature Sensor
A battery temperature sensor is used to measure the battery temperature. At this moment, the temperature
sensor is connected with the UPS internal logic circuit.
With this feature fitted, the nominal float voltage supplied to the battery is adjusted so as to be inversely
proportional to the ambient temperature of the battery cabinet or battery room. This prevents the battery
being over charged at high ambient temperatures.
Preparation
1. Prepare the installation tools, including a cross head screwdriver.
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