General, Differences, Section 6 • relay differences -1 – Basler Electric BE1-50/51B User Manual

Page 55: General -1, Differences -1

9252000991 Rev R

BE1-50/51B Relay Differences

6-1

SECTION 6 • RELAY DIFFERENCES

General

This section provides the information necessary to support BE1-50/51B 100 series relays, revision S and

previous. In all unit revisions R and previous SW3 is the same as SW8.

Differences

BE1-50/51B 100 series relay boards revision Q and previous have the locations for controls and

indicators shown in Figure 6-1. BE1-50/51B 100 series relays, unit revisions R and 200 series relays, unit

revisions H and previous have the locations for controls and indicators shown in Figure 6-2. Table 6-1

lists and briefly describes the operator controls of these relays. Reference the callout letters to Figures 6-

1 and 6-2.

Table 6-1. BE1-50/51B Controls and Indicators for 100 Series Relays Revision Q and Previous

Locator

Control or

Indicator

Function

SW8-1

SW8-1 selects the system operating frequency. SW8-1 open (OFF)

selects 60 hertz operation. SW8-1 closed (ON) selects 50 hertz

operation.

SW8-2

In 100 and 200 series relays,

SW8-3

SW8-2 selects additional delay for the

instantaneous element. Switch SW8-2 closed (ON) provides an

additional instantaneous delay of 0.1 seconds.
In 100 series relays, switch SW8-3 closed (ON) provides an

additional instantaneous delay of 0.2 seconds. Closing both switches

SW8-2 and SW8-3 provides an additional instantaneous delay of 0.3

seconds.
In 200 series relays,

SW8-4

SW8-3 open (OFF) selects ABB type curves

(refer to Table 1-3). SW8-3 closed (ON) selects GE IAC type curves

(refer to Table 1-4).
Provides selection of either instantaneous or integrating reset

characteristic. SW8-4 closed (ON) provides integrating reset. SW8-4

open (OFF) provides instantaneous reset.

Auxiliary Output

Jumper

Terminations

Configures the auxiliary output contacts to close with either the

instantaneous (50) trip and/or the timed (51) trip.
Jumper E2 to E1A to close the auxiliary contact with the timed (51)

trip. This jumper is yellow and factory installed to close the auxiliary

output contacts with the timed trip.
Jumper E3 to E1B to close the auxiliary contact with the

instantaneous (50) trip. This jumper is blue and factory installed to

close the auxiliary output contacts with the instantaneous trip.