9252000991 Rev N
BE1-50/51B General Information
1-9
Figure 1-5. Harmonic Rejection
Target Indicators
Gravity latched, manually reset targets indicate that current of 0.2 amperes or greater was present in the
trip circuit. Target coil resistance is less than 0.1 ohms and operate time is less than one millisecond. See
Output Contacts
for maximum current rating.
Output Contacts
Output contacts are surge protected and rated as follows:
Resistive Ratings
120/240 Vac:
Make 30 amperes for 0.2 seconds, carry 7 amperes for 2 minutes, 3
amperes continuously, and break 5 amperes.
125/250 Vdc:
Make 30 amperes for 0.2 seconds, carry 7 amperes for 2 minutes, 3
amperes continuously, and break 0.3 ampere.
Inductive Ratings
120/240 Vac, 125/250 Vdc:
Make and carry 30 amperes for 0.2 seconds, carry 7 amperes for 2
minutes, 3 amperes continuously, and break 0.3 ampere. (L/R = 0.04).
AUX Output Contact
The AUX Output contact can be configured in the field using jumpers to select closing on either timed or
instantaneous trip. The AUX output contact is surge protected and has the same ratings as the output
contacts above.
Type Tests
Isolation
Meets IEC 255-5 and exceeds IEEE C37.90-1989, one-minute dielectric (high potential) tests as follows:
All circuits to ground:
2,828 Vdc
Input to Output Circuits:
2,000 Vac or 2,828 Vdc
Surge Withstand Capability
Qualified to IEEE C37.90.1-1989
Standard Surge Withstand Capability (SWC) Tests for Protective Relays
and Relay Systems.
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