1–26 869 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
SPECIFICATIONS CHAPTER 1: INTRODUCTION
Outputs
ANALOG OUTPUTS
Range (configurable):........................................0 to 1mA, 0 to 5mA, 0 to 10mA, 0 to 20mA, 4 to 20mA
Max. load resistance:........................................10 kΩ @ 1 mA,
600 Ω @ 20 mA
Accuracy:................................................................± 1% of full scale
Isolation: .................................................................500V DC for one minute (functional isolation between analog
inputs and output group; and each group of chassis)
Driving Signal: ......................................................any Analog quantity
Sampling Interval: ..............................................Typically 500 ms
Upper and lower limit
(for the driving signal): ...............................-90 to 90 pu in steps of 0.001
TRIP/CLOSE OUTPUT RELAYS
(Relays #1 and #2 from Slot F, Relays #9 and
#10 from Slot G)
Type: .........................................................................FORM-A
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 @ 250 VAC Pilot duty A300
Break (AC resistive):............................................277 VAC / 10 A
Operation Mode: .................................................Self-Reset, Latched, Pulsed, Non-Failsafe, Failsafe
FORM-A VOLTAGE MONITOR
Applicable voltage: ............................................20 to 250 VDC
Trickle current: .....................................................1 to 2.5 mA
Timer acurracy: ...................................................± 3% of operate time or ± 1/4 cycle (whichever is greater)
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