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Technical description
9 Technical data
9.3 Protection stages
VM55.EN005
VAMP 24h support phone +358 (0)20 753 3264
173
9.3.3.
Synchrocheck function
Sync mode
Off; Async; Sync;
Voltage check mode
DD;DL;LD;DD/DL;DD/LD;DL/LD;DD/DL/LD
CB closing time
0.04 – 0.6 s
U
dead
limit setting
10 – 120 % U
n
U
live
limit setting
10 – 120 % U
n
Frequency difference
0.01 – 1.00 Hz
Voltage difference
1 – 60 % U
n
Phase angle difference
2 – 90 deg
Request timeout
0.1 – 600.0 s
Stage operation range
46.0 – 64.0 Hz
Reset ratio (U)
0.97
Inaccuracy:
- voltage
±3 % U
n
- frequency
±20 mHz
- phase angle
±2
when Δf < 0.2 Hz, else
±5
- operating time
±1% or ±30 ms
NOTE! When “sync” mode is used, Δf should be less < 0.2 Hz.
9.3.4.
Circuit-breaker failure protection
Circuit-breaker failure protection CBFP (50BF)
Relay to be supervised
T1 or T2
Definite time function
- Operating time
0.1 – 10.0 s (step 0.1 s)
Reset time
<95 ms
Inaccuracy
- Operating time
±20 ms
Содержание VAMP 55
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