BRAND : Basler
Basler Electric ES Series Protection Relays provide a wide range of functions with the following common specifications:
Power Supply
All units are self-powered except for the ES-37, ES-51, ES-37/51, ES-49, ES-74S, and ES-74V relays.
ES Relay Model Nominal Sensing Input
25, 27, 59, 32, 47, 47N, 55, 81O, 81U 120, 208, 240, 380, 415 or 480 Vac* 32, 37, 51, 55 5 A (or 1 A for 55) 74S 50 or 100 mVdc 74V 1, 10, 100, or 125 Vdc 49 10 ? Cu or 100 ? Pt
Output
Relay Type: SPDT (form-C)
AC Rating:
Make and Carry: 250 V, 5 A
Break Resistive or Inductive: 0.3 A at 250 V (L/R=0.04 max.)
Applied Standards
For all ES Series Protection Relays:
IEC 60255-1 Measuring Relays and Protection
Equipment-Part 1: Common requirements
IEEE C37.90™-2005 Relays and Relay Systems
Associated with Electric Power Apparatus
IEEE C37.90.1™-2012 Surge Withstand Capability
Tests for Relays and Relay Systems Associated with
Electric Power Apparatus
IEEE C37.90.2™-2004 Withstand Capability of Relay
Systems to Radiated EMI from Transceivers
IEEE C37.90.3™-2001 ESD Tests for Protective
Relays
For ES-74S Relay only:
IEEE 421.3™-1997 For High-Potential Test
Requirements for Excitation Systems for
Synchronous Machines (for field voltages up to
600 Vdc and bridge input voltages up to 1,300 Vac)
Basler Electric ES Series Protection Relays provide a wide range of functions with the following common specifications:
Power Supply
All units are self-powered except for the ES-37, ES-51, ES-37/51, ES-49, ES-74S, and ES-74V relays.
ES Relay Model Nominal Sensing Input
25, 27, 59, 32, 47, 47N, 55, 81O, 81U 120, 208, 240, 380, 415 or 480 Vac* 32, 37, 51, 55 5 A (or 1 A for 55) 74S 50 or 100 mVdc 74V 1, 10, 100, or 125 Vdc 49 10 ? Cu or 100 ? Pt
Output
Relay Type: SPDT (form-C)
AC Rating:
Make and Carry: 250 V, 5 A
Break Resistive or Inductive: 0.3 A at 250 V (L/R=0.04 max.)
Applied Standards
For all ES Series Protection Relays:
IEC 60255-1 Measuring Relays and Protection
Equipment-Part 1: Common requirements
IEEE C37.90™-2005 Relays and Relay Systems
Associated with Electric Power Apparatus
IEEE C37.90.1™-2012 Surge Withstand Capability
Tests for Relays and Relay Systems Associated with
Electric Power Apparatus
IEEE C37.90.2™-2004 Withstand Capability of Relay
Systems to Radiated EMI from Transceivers
IEEE C37.90.3™-2001 ESD Tests for Protective
Relays
For ES-74S Relay only:
IEEE 421.3™-1997 For High-Potential Test
Requirements for Excitation Systems for
Synchronous Machines (for field voltages up to
600 Vdc and bridge input voltages up to 1,300 Vac)