Utility Relay Company AC-PRO-II, Instruction Manual

Page: 12 / 56

AC-PRO-II
®
Instruction Manual www.utilityrelay.com
Page 10
Alarm Relay
5A @ 120VAC
Position Switch
GF
Defeat
as 52a or 52b) Input
+
Actuator Phase A Phase B Phase C Neutral
-
RS-485
Voltage Divider Module (VDM)
(optional) mounted on back
A
Voltage Inputs
B C G
Current Inputs
24VDC
Aux Pwr
USB
Laptop / PC
SAFE-T-TRIP
AC-PRO-II Local Display Unit
USB Options
Optional Quick-Trip
Cable & Connectors
Normal Power Flow
Phase A
Phase B
Phase C
Neutral
Breaker Harness Cable
Configurable
Indication, or
other function
Customer Alarm,
5A @ 24VDC
URC Breaker
(Configurable
1A Fuses
Breaker Harness Plug
+
-
SHLD
Breaker Cubical
Terminal Block
Optional RS-485
Cable/ Connector
Assembly. Maintain
proper polarity. Blue
wire is "+".
To next AC-PRO or
AC-PRO-II trip unit
RS-485
Comm.
Loop
COMM.
GND to
Breaker
frame
Quick-Trip
Connector
LOAD
+
-
SHLD
Typical RS-485
twisted pair comm.
cable by Others.
Wiring provided by Others
(#14AWG - #30AWG)
Neutral CT Connector
Actuator
Neutral CT is optional.
Only for 4-wire
systems with Ground
Fault Protection and/or
Neutral Overload
protection.
WIRE CODE
R = Red
B = Black
W = White
Y = Yellow
L = Blue
N = Brown
G = Green
CL = CLEAR
BA = BARE
R B L W Y W N W G W
BA
L
CL
Optional Quick-Trip System
Phase CTs
#18 AWG type MTW
(Black)
Color code tape
or labels by
Others
#14 AWG type SIS
(Gray)
USB Extension
USB Extension port
in switchgear door
3-Phase
Source
CT Configuration shown
allows for Residual
Ground Fault protection
and Neutral Overload
Protection.
(Cable by
Others)
AC-PRO-II
Quick-Trip Switch
See Section
7.0 for Remote
QT Switch &
Indication
wiring
ON
OFF
QT ON
R
COMM
OK
PICKUP
R
R
R
Current Limiting
S
par
e
AC-PRO / AC-PRO-II
B-292 Test Set
Push
To
Verify
DISPLAY
Currents
Connector Actuator
Connector
1 2
1: +24VDC
2: GND
Figure 5.3: AC-PRO-II Typical Wiring Diagram