9252000894 Rev D
BE1-50/51B-230/-234 Installation
4-1
SECTION 4
•
INSTALLATION
INTRODUCTION
BE1-50/51B-230 relays are direct replacements for General Electric IAC66K relays with 5 Aac nominal
current sensing. BE1-50/51B-234 relays are direct replacements for General Electric IAC66K relays with
1 Aac nominal current sensing. The BE1-50/51B-230 and BE1-50/51B-234 relays are supplied as draw-
out assemblies that plug directly into existing cases for IAC66K relays. The draw-out assembly is supplied
with a connection plug, relay cover, and adapter plate for mounting the cover onto an existing IAC66K
case.
If desired, proper relay operation may be confirmed by performing the test procedures listed in Section 5.
If the relay will not be installed immediately, store the relay in its original shipping carton in a moisture-
and dust-free environment.
FACTORY SETTINGS
Factory settings for the internal switches of SW3 and jumper settings are as follows:
•
SW3-1 — OFF (60 hertz operation).
•
SW3-2 — OFF (0.0 additional fixed delay for the instantaneous element).
•
SW3-3 — ON (GE IAC type characteristic curves).
•
SW3-4 — ON (Integrating reset characteristics).
•
J1 pins 2-3 — 50-A minimum target operating current of 80 to 200 mA
•
J2 pins 1-2 — 51 minimum target operating current of 0.9 to 2.25 A
INSTALLATION
The relay must be configured with the appropriate settings before commissioning the relay in a specific
application. Changing the pickup settings while the relay is in service may cause tripping. Perform the
following steps to install the BE1-50/51B-230 or BE1-50/51B-234 relay in an existing GE IAC66K relay
case:
1. Remove the existing GE IAC66K relay from its case.
2. Using the four screws provided, attach the cover adapter to the existing case.
3. Insert the BE1-50/51B-230 or BE1-50/51B-234 into the case. Lock the draw-out assembly in place
with the cradle latches.
4. Install the connection plug supplied with the relay.
5. Install the cover supplied with the relay.
a. Align the interlocking bracket at the top of the cover with the mating receptacle at the top of the
cover adapter plate.
b. Secure the cover by tightening the captive knob at the bottom of the cover.
NOTE
Be sure that the relay is hard-wired to earth ground with no smaller than 12 AWG
copper wire attached to the ground terminal on the rear of the unit case. When
the relay is configured in a system with other devices, it is recommended to use a
separate lead to the ground bus from each unit.
Summary of Contents for BE1-50B-230
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