Basler Electric BE1-87B, High Impedance Bus Differential Relay

Provides economical high-speed protection in a conventional package

for high-impedance differential applications.

Product Features & Benefits

• Proven high-impedance differential provides optimum speed and selectivity.

• Space and cost-saving configurations available featuring a single-phase S1

case, a three-phase M1 case, and a three-phase 19″ rack-mount case.

• Easily verify external wiring and prevent misoperation with the CT Circuit

Diagnostic function and Steady-State Unbalance alarm.

• Two timing options are available. Each includes a jumper-selectable

instantaneous or intentional time delay.

• Timing Option A1: The instantaneous jumper position provides fastest tripping.

The 20 millisecond intentional delay jumper position prevents tripping for short

duration faults within the zone of protection that is protected by a high speed fuse.

• Timing Option A2: The instantaneous jumper position provides fastest tripping.

The 2 millisecond intentional delay jumper position prevents nuisance tripping for

very short duration faults such as nearby lightning strikes.

• Reduced battery load with low burden power supply.

• Easily perform in-case system and device tests using test paddles.

• Available as a plug-n-play retrofit for GE PVD21B or PVD21D differential voltage

relays. Fits into an existing M1 GE PVD case. Request Basler part number 9282300111.