9.3 Protection stages
9 Technical data
Technical description
170
VAMP 24h support phone +358 (0)20 753 3264
VM55.EN005
9.2.5.
Casing
Degree of protection (IEC 60529)
IP54
Dimensions (W x H x D)
130 x 170 x 210 mm
Material
1 mm steel plate
Weight
2.0 kg
Colour code
RAL 7032 (Casing) / RAL 7035 (Back plate)
9.2.6.
Package
Dimensions (W x H x D)
320 x 215 x 175 mm
Weight (Terminal, Package and Manual)
3.0 kg
9.3.
Protection stages
9.3.1.
Voltage protection
Overvoltage stages U>, U>> and U>>> (59)
Overvoltage setting range:
50 – 150 %U
N
for U>, U>>
50 – 160 % U
N
for U>>>
Definite time characteristic:
- operating time U>, U>>
0.08
*)
– 300.00 s (step 0.02)
- operating time U>>>
0.06
*)
– 300.00 s (step 0.02
Starting time
Typically 60 ms
Resetting time U>
0.06 – 300.00 s (step 0.02)
Resetting time U>>, U>>>
<95 ms
Retardation time
<50 ms
Reset ratio
0.99 – 0.800 (0.1 – 20.0 %, step 0.1 %)
Inaccuracy:
- starting
±3% of the set value
- operate time
±1% or ±30 ms
*) This is the instantaneous time i.e. the minimum total operational time including the fault
detection time and operation time of the trip contacts.
VS_U_Under U_Under1
Volts/hertz over-excitation protection Uf> (24)
Pick-up setting range
100 – 200 %
Operating time
0.3 – 300.0 s
Start time
Typically 200 ms
Reset time
<450 ms
Reset ratio
0.995
Inaccuracy:
- Starting
±3 % of set value or ±0.5 % of rated value
- Operating time at definite time function
±1 % or ±150 ms
Содержание VAMP 55
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