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Chapter 2 Electrical Installation
7
6
5
4
3
2
1
8
9 10
11
12 13
LINE
A
B
LOAD
DUAL-PHASE
WITH CTs AND Direct Voltage
L1
L2
POWER
+
-
PORT
BACK VIEW
N
VII. Dual-Phase System
2.6 R
ELAYS AND
P
ROTECTION
NOTE:
T
HIS SECTION IS APPLICABLE ONLY IF THE
-NL R
ELAY
O
PTION WAS ORDERED
.
The EPM3000P allows the user to access a variety of relay options through the programming mode. The relay option
package consists of two relays, which can be dedicated to alarm or communication (or both).
TIME DELAY
: Sets off the alarm, alerting the user that an out-of-limits condition occurred during the defined time
limit. The time delay can be programmed for any desirable duration.
If the relays are dedicated to communication, there are two different modes:
Lock ON Relay will not be affected by any alarm condition.
Lock OFF Relay will not be affected by any alarm condition.
If the relays are used for communication and alarm, there are four different modes:
Lock ON Relay stays on regardless of any alarm condition.
Lock OFF Relay stays off regardless of any alarm condition.
Free ON Relay turns on unless other conditions force it off.
Free OFF Relay turns off unless other conditions force it on.
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GE Industrial Systems