Powerware 30-160kVA User Manual
Page 41
A---17
Powerware 9315 Maintenance Bypass Module 30---160kVA
164201177 Rev. C 041500
Read and understand the following notes while planning your installation:
1.
Refer to national and local electric codes for acceptable external wiring practices.
2.
Material and labor for external wiring requirements are to be provided by others.
3.
For external wiring requirement, including the minimum AWG size of external wiring, see the appropriate column in Table A---2
and A---4. The power wiring for this equipment is rated at 90 degrees Celsius.
4.
The output of the UPS is not a separately derived source. Output neutral is not bonded to equipment ground through the main
bonding jumper. Refer to NEC and local codes for proper grounding practices.
5.
The maintenance bypass (MBM) source must contain overcurrent protection with the maximum trip setting of 125% of the full
load input current in Table A---2 and A---4.
6.
The Bypass three-phase feeds should be symmetrical about ground.
7.
Transfer sequence instructions for the MBM are placed on the breaker access panel behind the cabinet doors.
8.
Control wiring must be installed in separate conduit from the power wiring.
9.
Electronic interlock is a standard part of the maintenance bypass module cabinet. This electronic interlock can be replaced with
an optional (extra cost) mechanical interlock if required.
10. Refer to UPS Installation Manual for proper Bypass terminating lugs at UPS cabinet or input transformer cabinet.
11. Refer to Table C---3 for control wiring connections.
12. Refer to Parallel Redundant System Manual for details.
13. A Maintenance Bypass neutral feeder must be supplied when the MBM output neutral is used. If no Maintenance Bypass
neutral is supplied, the MBM output neutral is not to be used. In neither case shall the MBM output neutral be bonded to ground.
LEGEND
MIS:
MAINTENANCE ISOLATION BREAKER
MBM:
MAINTENANCE BYPASS BREAKER
BIB:
BYPASS INPUT BREAKER
SKRU:
SOLENOID KEY RELEASE UNIT
(MECHANICAL INTERLOCK)
PTC:
PARALLEL TIE CABINET
RT:
REVERSE TRANSFER
DESCRIPTION:
DATE:
DRAWING NO:
1 of 1
SHEET:
REVISION:
A
080498
164201177---7
ONELINE -- 30-160kVA, PARALLEL, 480:480VAC
110100069
600:600VAC, 400:400VAC