ABB RES670 Product Manual page 50

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Phasor measurement unit RES670 ANSI
Customized
Product version: 1.2
Basic IED functions
Table 61. Self supervision with internal event list
Data
Recording manner
List size
Table 62. Time synchronization, time tagging
Function
Time tagging resolution, events and sampled measurement values
Time tagging error with synchronization once/min (minute pulse synchronization), events and sampled measurement
values
Time tagging error with SNTP synchronization, sampled measurement values
Table 63. GPS time synchronization module (GTM)
Function
Receiver
Time to reliable time reference with antenna in new
position or after power loss longer than 1 month
Time to reliable time reference after a power loss
longer than 48 hours
Time to reliable time reference after a power loss
shorter than 48 hours
Table 64. GPS – Antenna and cable
Function
Max antenna cable attenuation
Antenna cable impedance
Lightning protection
Antenna cable connector
Accuracy
50
Value
Continuous, event controlled
40 events, first in-first out
Range or value
Accuracy
±1µs relative UTC
<30 minutes
<15 minutes
<5 minutes
1MRK511254-BUS B
Value
1 ms
± 1.0 ms typically
± 1.0 ms typically
Value
26 db @ 1.6 GHz
50 ohm
Must be provided externally
SMA in receiver end
TNC in antenna end
+/-2μs
ABB

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