VAMP 150
Motor protection relay
Technical Description
VAMP Ltd
44
Vamp 24h support phone : +358 (0)20 753 3264
VM150.EN005
Incorrect phase sequence I2>> (46)
Setting:
80 % (fixed)
Operating time
<120 ms
Undercurrent protection stage I< (37)
Current setting range:
20 – 70 %I
MOT
(step 1%)
Definite time characteristic:
- operating time
0.3 – 300.0s s (step 0.1)
Block limit:
15 % (fixed)
Starting time
<300 ms
Resetting time
<300 ms
Resetting ratio
1.05
Accuracy:
- starting
±2% of set value
- operating time
±1% or ±200 ms
5.3.2.
Residual current protection
Residual current stage I
0
> (50/51N)
Residual current setting range
0.005 - 2.000 pu (step 0.005)
Definite time characteristic:
- operating time
0.08* - 300.00 s (step 0.02 s)
Starting time
<60 ms
Resetting time
<60 ms
Resetting ratio
0.97
Accuracy:
- starting
±2% of set value or
±0.3% of rated 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.
Residual current stage I
0
>> (50/51N)
Current setting range:
0.02 – 2.00 pu (step 0.01)
Definite time characteristic:
- operating time
0.05** - 300.00 s (step 0.01)
Inverse time characteristic:
- 4 characteristic curve sets: (IEC60255-
3)
- Time multiplier k
EI, VI, NI, LTI *)
0.05 – 3.20 (step 0.01)
Starting time
<60 ms
Resetting time
<60 ms
Resetting ratio
0.97
Accuracy:
- starting
±2% of set value or
±0.3% of rated value
- operating time definite time
- operating time inverse time
±1% or ±30 ms
±5% or at least ±30 ms (I
0
< 5 x I
0n
)
*) EI = Extremely Inverse, VI = Very Inverse, NI = Normal inverse, LTI = Long Time Inverse
**) This is the instantaneous time i.e. the minimum total operational time including the fault
detection time and operation time of the trip contacts.
