GE EPM 5300 User Manual download pdf (Page 54)

CHAPTER 9: PROGRAMMING GROUP 0 – GLOBAL METER SETUP

EPM 5000 series Advanced Power Meters GE Multilin

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

UP UP FAIL-SAFE MODE—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.

58 Hz

62 Hz

0 Hz

RESET

L 1

L 2

SET

NO POW ER TO THE UNIT

RESET

1 2 ... 49 50 51 52 53 54 55 56 57 58 59 ... 99 100

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GE EPM 5300 User Manual Page 54