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28.5 VDC Ground Power Unit
Models:
11A6647-1000/1010
11B6647-1000/1010
11C6647-1000/1010
11D6647-1000/1010
11A6647C1000/1010
11B6647C1000/1010
11C6647C1000/1010
11D6647C1000/1010
11A6655-1000/1020
11B6655-1000/1020
11C6655-1000/1020
11A6655C1000/1020
11B6655C1000/1020
11C6655C1000/1020
11D6655C1000/1020
11A6665-1000/1010
11B6665-1000/1010
11C6665-1000/1010
11A6666-1000
11B6666-1000
11C6666-1000
12/2006 - Rev. 04
- 17 -
4.5
ELECTRICAL CONNECTIONS (POWER) (continued)
4.5.3
Mains Fuses
To meet Health & Safety requirements, lockable isolating fused-switches must always be installed
for the mains infeed. The fuses should be of type GL. Likewise, it should be possible to isolate the
converter output from downstream circuits by means of an external lockable switch or circuit
breaker. Please consult your Piller representative regarding use of circuit breakers for the mains
infeed.
Equipment Type
Mains Isolator
Fuse
28V DC GPU 600A
125 A
16 A @ 575V
30 A @ 480V
40 A @ 400V
60 A @ 230V
60 A @ 208V
4.5.4
Connections
Power:
•
3 phase Mains N
PE (Ground) (the unit will work
with or without a neutral)
•
2 wire 28V DC + and –
Controls:
Connections to the converter may include
most of the following, depending on the
configuration of the system
•
External Voltage Monitoring
•
Emergency Stop circuit
Figure 4.5.4 A shows the basic
connections for a converter.
4.5.4 Connections continued on following page.
Figure 4.5.4 A
Basic connections 28 VDC GPU