GE EPM 5200 Relay Mode, Definitions, Switch Description, Segment Position, Switch C Description

CHAPTER 9: PROGRAMMING GROUP 0 – GLOBAL METER SETUP

9.7: Relay Mode

NOTE: Relays are not available for the EPM 5200P.

SWITCH	DESCRIPTION	Segment Position
A	Reversal Imbalance Control	UP!Enable
		DOWN!Disable
B	AND/OR Logic	UP!AND
		DOWN!OR
C & D	Relay Control	see Table 8-4

Table 9-3: SWITCH PACKS for 04P & 05P

The Switch PACKS in FUNCTIONS 4 and 5 of programming GROUP 0 control the relay position. Setting the switches in different combinations allows the user to specify the conditions in which the relay will be “SET” or “RESET.” The following table indicates possible configurations.

SWITCH C	SWITCH	DESCRIPTION
	D
UP	UP	FAIL-SAFEMODE—The normal or non-event condition is set. RESET relay
		on either out of limit condition. Relay acts as a protective switch if power is
		interrupted. This alerts the user if the meter or the meter power is out.
UP	DOWN	N/A (Reserved for future features).
DOWN	UP	N/A (Reserved for future features).
DOWN	DOWN	RESET MODE—The normal or non-event condition is reset. SET relay on
		either out of limit condition.
		Table 9-4
		DEFINITIONS:

RESET: There is a short between “COM” and “N.C.” (Normally closed)

SET: There is a short between “COM” and “N.O.” (Normally open) (See Part I: Installation and Operation.)

Example 1: Fail-safe mode normally set—non-event condition is set relay

Relay 1 will be “SET” if the instantaneous reading for frequency is between 58 Hz and 62 Hz. When all other conditions exist, the relay will “RESET.”

NOTE: Under this setup the relay acts as a protective switch.

6 2 H z

5 8 H z

R E S E T

L 2

S E T

L 1

0 H z

R E S E T

N O P O W E R T O T H E U N I T R E S E T

50 EPM 5000 series Advanced Power Meters GE Multilin