ABB RET670 Product Manual page 76

Transformer protection RET670 ANSI
Pre-configured
Product version: 1.2
Table 77. IRIG-B
Quantity
Number of channels IRIG-B
Number of channels PPS
Electrical connector:
Electrical connector IRIG-B
Pulse-width modulated
Amplitude modulated
– low level
– high level
Supported formats
Accuracy
Input impedance
Optical connector:
Optical connector PPS and IRIG-B
Type of fibre
Supported formats
Accuracy
76
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 fibre
IRIG-B 00x, PPS
+/- 2μs
1MRK 504 118-BUS A
ABB