CHAPTER 1: INTRODUCTION
SPECIFICATIONS
350 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL
1–19
FORM-C RELAYS
Configuration:....................................................... 3 (three) electromechanical
Contact material: ................................................ silver-alloy
Operate time:........................................................ <8 ms
Continuous current:........................................... 10 A
Make and carry for 0.2s:.................................. 30 A per ANSI C37.90
Break (DC inductive, L/R=40 ms):................. 24 V / 1 A
48 V / 0.5 A
125 V / 0.3 A
250 V / 0.2 A
Break (DC resistive):............................................ 24 V / 10 A
48 V / 6 A
125 V / 0.5 A
250 V / 0.3 A
Break (AC inductive): .......................................... 720 VA @ 240 VAC Pilot duty A300
Break (AC resistive): ............................................ 250 VAC / 10 A
Ratings per UL Certification:
Break (AC resistive): ............................................ 250 VAC / 10 A GEN USE
Continuous Current: .......................................... 10 A
SOLID STATE CONTACT
Configuration:....................................................... 2 MOSFET
Operate time:........................................................ 60 µs
Continuous current:........................................... 6 A
Make and carry for 1 s:.................................... 10 A
Break (DC resistive):............................................ 300 V / 6 A
Break (DC inductive L/R=40ms): ................... 300 V / 6 A
Ratings per UL Certification:
Break:........................................................................ 24 VDC, 1 A Pilot Duty
48 VDC, 0.5 A Pilot Duty
125 VDC, 0.3 A Pilot Duty
250 VDC, 0.2 A Pilot Duty
Continuous Current: .......................................... 6 A
TRIP / CLOSE SEAL-IN
Relay 1 trip seal-in: ............................................ 0.00 to 9.99 s in steps of 0.01
Relay 2 close seal-in:......................................... 0.00 to 9.99 s in steps of 0.01
NON-ARC FLASH OPTION
FORM-A RELAYS
Configuration:....................................................... 2 (two) electromechanical
Contact material: ................................................ silver-alloy
Operate time:........................................................ <8 ms
Continuous current:........................................... 10 A
Make and carry for 0.2s:.................................. 30 A per ANSI C37.90
Break (DC inductive, L/R=40 ms):................. 24 V / 1 A
48 V / 0.5 A
125 V / 0.3 A
250 V / 0.2 A
Break (DC resistive):............................................ 24 V / 10 A
48 V / 6 A
125 V / 0.5 A
250 V / 0.3 A
Break (AC inductive): .......................................... 720 VA @ 240 VAC Pilot duty A300
Break (AC resistive): ............................................ 250 VAC / 10 A
Ratings per UL Certification:
Break (AC resistive): ............................................ 250 VAC / 10 A GEN USE
Continuous Current: .......................................... 10 A
