9170800990 Rev M
BE1-87G Testing and Setting
5-1
SECTION 5
●
TESTING AND SETTING
INTRODUCTION
Proper relay operation can be confirmed by performing the test procedures in this section. This section
also contains recommendations for selecting an appropriate sensitivity switch (operating current) setting.
Relay Operating Precautions
Before operating the relay, note the following precautions:
•
A minimum of 200 mA in the output circuit is required to ensure operation of current operated targets
(relays with style number xxx-xxB-xxxxx)
•
If a wiring insulation test is required, remove the connection plugs and withdraw the cradle from its
case
•
When the connection plugs are removed, the relay is disconnected from the operating circuit and will
not provide system protection. Before removing a relay from service, be sure that external operating
(monitored) conditions are stable.
•
The relay case must be hard-wired to earth ground with no smaller than 12 AWG copper wire. A
separate ground lead is recommended for each device.
OPERATIONAL TEST PROCEDURE
The procedures that follow verify proper operation of the BE1-87G relay
Restraint current applied to any one relay input must not exceed either of the following conditions:
•
10 amperes continuous or 250 amperes for 1 second (relay style number x1x-xxx-xxxxx)
•
2 amperes continuous or 50 amperes for 1 second (relay style number x2x-xxx-xxxxx)
Whenever this current level is exceeded, provisions must be made to cut off the sensing current as the
relay trips.
CAUTION
To avoid false tripping on three-phase relays, the upper connection plug must be
in place prior to inserting or removing the lower connection plug.
CAUTION
During testing, do not apply a continuous operate current greater than 3 Aac.
Sustained operate current higher than 3 Aac will increase the temperature in the
stabilizing reactor and cause insulation breakdown.
NOTE
Because of the reactance of the stabilizing reactors, the burden may be too high
for large values of operate current with solid-state test sets.
The internal stabilizing reactor in relays with single-phase sensing (style number
Sxx-xxx-xxxxx) may be bypassed by placing a jumper across the terminals
illustrated in Figure 5-1. The jumper used should be capable of carrying 5 Aac of
current.
To bypass the external stabilizing reactor used on relays with three-phase
sensing (style number Gxx-xxx-xxxxx), the current source may be connected
directly to the relay case terminals
Summary of Contents for BE1-87G
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