Specifications
Port Power
Input Voltage Range:
4.0 to 5.0 Vdc
Input Power:
1.8 W typical
CT Power
Minimum current on any phase:
600A models:
45 A RMS
Maximum current on all phases:
600A models:
720 A continuous
12 kA for 1 s
25 kA for 0.25 s
Maximum measured current:
600A models:
14.5 kA
Steady State Accuracy
CT:
±0.2% typical
Burden Board:
±0.3% typical
Main Board:
±0.2% typical
Time-Overcurrent
Pickup Accuracy
E, K, Coordinating-Tap, and Coordinating-Main Curves:
−0 to +10%
Nominal pickup s5% typical
U.S. and IEC Curves:
±5 A primary and ±5% of setting
Time-Overcurrent
Response
E, K, Coordinating-Tap, and Coordinating-Main Curves:
−0 to +10% in terms of current OR
−0 to +20% in terms of time OR
−0 to +6 ms, whichever gives the greater allowed operating time
4 to 10 ms for currents greater than 2 times the current corresponding
to a 10 ms minimum response
U.S. and IEC Curves:
±1.5 cycles and ±10% of curve time for current between 2 and 30 multiples
of pickup, for faults not exceeding the maximum current rating
Instantaneous Pickup
Accuracy
600-A models:
−0 to 10%
Instantaneous
Response
4 to 10 ms for currents greater than 2 times the instantaneous pickup setting
Definite-Time
Response
−0 to +8 ms
S&C Instruction Sheet 695-515
19
Summary of Contents for Vista SD
Page 34: ......
