Hitachi Relion 670 Series Product Manual page 156

Line differential protection RED670
Version 2.2
Table 214. IRIG-B
Quantity
Number of channels IRIG-B
Number of optical channels
Electrical connector:
Electrical connector IRIG-B
Pulse-width modulated
Amplitude modulated
– low level
– high level
Supported formats
Accuracy
Input impedance
Optical connector:
Optical connector IRIG-B
Type of fiber
Supported formats
Accuracy
156
SEMOD141136-2 v10
© 2017 - 2022 Hitachi Energy. All rights reserved
Rated value
1
1
BNC
5 Vpp
1-3 Vpp
3 x low level, max 9 Vpp
IRIG-B 00x, IRIG-B 12x
+/-10μs for IRIG-B 00x and +/-100μs for IRIG-B 12x
100 k ohm
Type ST
62.5/125 μm multimode fiber
IRIG-B 00x
+/- 1μs
1MRK 505 379-BEN R
Hitachi Energy