Installation, Factory settings, Application coordination – Basler Electric BE1-50/51B-219 User Manual
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Installation
When not shipped as part of a control or switchgear panel, the relays are shipped in sturdy cartons to
prevent damage during transit. Immediately upon receipt of a relay, check the model and part number
against the requisition and packing list to verify that they agree. Visually inspect the relay for damage that
may have occurred during shipment. If there is evidence of damage, immediately file a claim with the
carrier and notify the Regional Sales Office, or contact the Sales Representative at Basler Electric,
Highland, Illinois.
Proper operation of the relay may be confirmed by performing the operational test procedure in the
chapter. If the relay won't 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 are as follows:
•
SW3-1 — OFF (60-hertz operation).
•
SW3-2 — OFF (0.0 additional fixed delay for the instantaneous element).
•
SW3-3 — OFF (Westinghouse/ABB type characteristic curves).
•
SW3-4 — ON (Integrating reset characteristics).
Installation
Select the desired relay settings before putting the relay into service. Changing pickup current settings
while the relay is in service may cause tripping. Perform the following procedures to install the BE1-
50/51B-219 or BE1-50/51B-226 relay:
•
Select the desired relay settings on your new BE1-50/51B-219/-226 relay.
•
Remove the existing ABB relay cradle.
•
Insert the new relay cradle and close the cradle latches locking the relay into the case.
Caution
Close all BLACK handle switches before closing any RED handle
switches. Insure that the RED handle switches are closed last.
•
Close knife-blade switches.
•
To install the cover, position the interlocking bracket at the top of the new Basler Electric cover into
the mating receptacle at the top of the case. Secure the captive fastener at the bottom of the cover.
Application Coordination
In a typical application coordination scheme, a BE1-50/51B-219 or BE1-50/51B-226 is being used to
provide primary protection for a radial distribution feeder. An electromechanical overcurrent relay with
extremely inverse timing provides protection for the transformer and bus. To improve coordination with
the electromechanical relay, the BE1 relay with integrating reset characteristic has the time characteristic
curve E (extremely inverse) selected (SW3-3 set to OFF) and the TIME DIAL set to 2.0. The feeder
reclosing relay is set for two reclose attempts at 3 and 15 seconds after the initial trip. If a permanent fault
occurs (magnitude ten times pickup), calculate the feeder breaker trip time for each of the three
operations. Refer to the
chapter for characteristic curve constants.
BE1-50/51B-219/-226
Installation