CHAPTER 1: INTRODUCTION SPECIFICATIONS
850 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL 1–37
FORM A AND FORM C OUTPUT RELAYS, I/O CARDS B AND K
Maximum Working Voltage: ..........................300 VDC / 300 VAC
Make and short-time carry current: ..........30A/0.2s per IEEE C37.90
Maximum Continuous Current per
contact: ..............................................................5A
Total maximum current for contacts
connected to common potential:..........10A
Breaking Capacity (DC inductive) with
respect to source voltage, @L/R = 40
ms (10000 Operation, per IEC 60255-1
2009-08):............................................................24 V - 1 A
48 V - 0.5 A
125 V - 0.3 A
250 V - 0.2 A
Breaking Capacity (DC resistive) with
respect to source voltage:.........................24 V - 6 A
48 V - 0.7 A
125 V - 0.5 A
250 V - 0.3 A
Breaking Capacity (AC inductive) with
respect to source voltage, @PF= 0.35
or less:.................................................................B300, Pilot duty
360 VA
Breaking Capacity (AC resistive) with
respect to source voltage:.........................277 V - 5 A
Operating Time (coil energization to
contact closure, resistive load):...............<8ms
Contact Material:.................................................Silver alloy
Mechanical Endurance (no load):................> 10,000
Maximum Frequency of operation:............360/h
Protection Device across contact: ..............EMI Suppression Cap, 1nF
SOLID STATE RELAYS ON I/O CARD M
Maximum Working Voltage: ..........................300 VDC
Make and short-time carry current: ..........30A/0.2 s per IEEE C37.90
Maximum Continuous Current per
contact: ..............................................................10 A
Total maximum current for contacts
connected to common potential:..........10 A
Breaking Capacity (DC inductive) with
respect to source voltage, @L/R = 40
ms (10000 Operation, per IEC 60255-1
2009-08):............................................................250 VDC - 10 A (or 2.5 kW)
(Maximum 10 A and 300 VDC
Breaking Capacity (DC resistive) with
respect to source voltage:.........................250 V - 30 A (or 7500 W)
Breaking Capacity (AC inductive) with
respect to source voltage, @PF= 0.35
or less:.................................................................NA
Breaking Capacity (AC resistive) with
respect to source voltage:.........................N/A
Operating Time (coil energization to
contact closure, resistive load):...............<0.2 ms
Contact Material:.................................................Hybrid
Mechanical Endurance (no load):................> 10,000
Maximum Frequency of operation:............360/h
Protection Device across contact:..............MO V, rated @ 250 VAC/320 VDC
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