Basler Electric BE1-87B - Manual (Page 3)

INTRODUCTION
This instruction manual provides information about the operation and installation of the BE1-87B Bus
Differential Relay. To accomplish this, the following information is provided:
•
General Information and Specifications
•
Controls and Indicators
•
Functional Description
•
Installation
•
Testing
WARNING!
To avoid personal injury or equipment damage, only qualified personnel should
perform the procedures in this manual.
The paddle plugs should be removed prior to performing a current circuit
insulation test. The design of the voltage-sensing circuit creates a low
resistance path to ground when the paddle plugs are installed, which results in
incorrect test results.
NOTE
Be sure that the BE1-87B 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 BE1-87B is configured in a system with other devices, it is
recommended to use a separate lead to the ground bus from each unit.
9282300990 Rev P BE1-87B Introduction i