9252000995 Rev G BE1-50/51B-218/-228 Introduction i
INTRODUCTION
This instruction manual provides information about the operation and installation of the BE1-50/51B-218
and BE1-50/51B-228 Overcurrent Relays. To accomplish this, the following information is provided:
• General Information and Specifications
• Controls and Indicators
• Functional Description
• Installation and Maintenance
• Testing
WARNING!
To avoid personal injury or equipment damage, only qualified personnel should
perform the procedures in this manual.
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.
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