Introducing the HLT Feature for BE1-50/51B Plug-and-Play and Retrofit Relays

9/30/2016

Basler Electric is pleased to introduce new BE1-50/51B Overcurrent Relays with the Hot Line Tag (HLT) feature. Utilizing the HLT feature makes it easy to use a low set instantaneous element to significantly reduce clearing time to assist with reducing arc flash hazards.

The instantaneous (50) element is used to provide the HLT feature and is invoked when the front-panel HLT switch is closed. The HLT switch places the 50 trip contact in parallel with the 51 trip contact. Proper setting of the instantaneous (50) pickup current level in conjunction with the HLT enable switch provides for the quickest possible fault detection. On units equipped with two 50 elements (models 255, 256, and 257), the 50-B provides the HLT feature.

A front-panel indicator is illuminated when HLT is active and trip voltage is present. These relays are designed to operate with 125 V nominal tripping circuits.

The following plug-and-play and retrofit models are available with the HLT feature.

BE1-50/51B-252 plug-and-play model for General Electric IAC arc flash relays:
  • Replaces relays with CTs located at terminals 5 and 6, and trip outputs located at terminals 1, 2, and 3.
  • No wiring changes required.
  • Fits into an existing case.
BE1-50/51B-253 retrofit model for General Electric  IAC arc flash relays:
  • Replaces relays with CTs located at terminals 5 and 6, and trip outputs located at terminals 1, 2, and 3.
  • Wiring changes required. Contact a Basler application engineer for further information.
  • Fits into an existing cutout.
  • No panel drilling or cutting required.
BE1-50/51B-254 plug-and-play model for ABB (Westinghouse) CO arc flash relays:
  • Replaces relays with CTs located at terminals 8 and 9, and trip outputs located at terminals 1, 2, and 10.
  • No wiring changes required.
  • Fits into an existing FT-11 case.

BE1-50/51B-255 plug-and-play model for ABB (Westinghouse) CO arc flash relays:

  • Replaces relays with CTs located at terminals 8 and 9, and trip outputs located at terminals 1 and 10.
  • No wiring changes required.
  • Fits into an existing FT-11 case.

BE1-50/51B-256 plug-and-play model for General Electric IAC arc flash relays:

  • Replaces relays with CTs located at terminals 5 and 6, and trip outputs located at terminals 1 and 2.
  • No wiring changes required.
  • Fits into an existing case.

BE1-50/51B-257 retrofit model for General Electric  IAC arc flash relays:

  • Replaces relays with CTs located at terminals 5 and 6, and trip outputs located at terminals 1 and 2.
  • Wiring changes may be required. Contact a Basler application engineer for further information.
  • This relay fits into an existing cutout.
  • No panel drilling or cutting required.
See Plug-and-Play and Retrofit Relays and BE1-50/51B Self-Powered Time Overcurrent Relays.
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