INSTALLATION REFERENCE
EATON
Powerware
®
225 kVA PDU Installation and Operation Manual
S
164201629 Rev D
www.powerware.com
A−50
A.6
Interface Wiring Notes
Control wiring for features and options should be connected at the customer
interface terminal blocks located inside the PDU.
W
A
R
N
I
N
G
Do not directly connect relay contacts to the mains related circuits. Reinforced insulation to the mains is
required.
C
A
U
T
I
O
N
Alarm relay contacts should not be operated in excess of 30 Vac @ 5A maximum.
1.
Use Class 1 wiring methods (as defined by the NEC) for interface wiring up to
30V. The wire should be rated at 24V, 1A minimum.
2.
Use Class 2 wiring methods (as defined by the NEC) for interface wiring from
30 to 600V. The wire should be rated at 600 volts, 1A minimum and 12 AWG
maximum.
3.
Use twisted-pair wires for each input and return or common.
4.
All interface wiring and conduit is to be provided by the customer.
5.
When installing external interface wiring (for example, building alarm, relay
output, and X−Slot) to the PDU interface terminals, conduit must be installed
between each device and the PDU cabinet.
6.
Install the interface wiring in separate conduit from the power wiring.
7.
All building alarm inputs require an isolated normally−open or normally−closed
contact or switch (rated at 24 Vdc, 20 mA minimum) connected between the
alarm input and common terminal. Building alarm inputs can be programmed
for use with either normally−open or normally−closed contacts. All relay and
switch contacts are customer-supplied.
8.
The building alarms can be programmed to display the alarm functional name
using the front panel LCD.
9.
Alarm relay contacts have a maximum current rating of 5A and a switched
voltage rating of 30 Vac and 28 Vdc.
10.
Alarm relay wiring should be a minimum of 22 AWG.
11.
See Table O, Figure A-37 through Figure A-39, and Chapters 3 and 7 for
interface wiring.
12.
LAN and telephone drops for use with X−Slot connectivity cards must be
provided by facility planners or the customer.
Summary of Contents for Powerware 225 kVA Three-Phase Power Distribution Unit
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