VAMP 150 - Page 71

VAMP Ltd
Motor protection relay
Technical Description
VAMP 150
VM150.EN005 Vamp 24h support phone : +358 (0)20 753 3264
43
Overcurrent stages I>> and I>>> (50/51)
Current setting range: 0.10 – 20.00 xI
MOT
(step 0.01)
Definite time characteristic:
- operating time 0.05* - 300.00 s (step 0.01)
Starting time <30 ms
Resetting time <60 ms
Resetting ratio 0.97
Accuracy:
- starting ±2% of 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.
Stall protection stage (48)
Setting range:
- Ist>
- I
MOT
St
1.30 – 10.00 xI
MOT
(step 0.01)
1.50 – 10.00 xI
MOT
(step 0.01)
Definite time characteristic:
- operating time 1.0 - 300.0 s (step 0.1)
Inverse time characteristic:
- 1 characteristic curve
- Time multiplier tDT>
Inv
1.0 – 200.0 s (step 0.1)
Starting time <300 ms
Resetting time <300 ms
Resetting ratio 0.90
Accuracy:
- operating time ±5% or at ±80 ms
Thermal overload stage T> (49)
Setting range: 0.5 – 1.20 xI
MOT
(step 0.01)
Alarm setting range: 60 – 99 % (step 1%)
Time constant Tau: 2 – 60 min (step 1)
Cooling time constant Tau2: 1.0 – 5.0 xTau (step 0.1)
Max. overload at +40 ° C
70 – 120 %I
MOT
(step 1)
Max. overload at +70 ° C
50 – 100 %I
MOT
(step 1)
Ambient temperature
-55 – 125 ° C (step 1 °)
Starting time <300 ms
Resetting time <300 ms
Resetting ratio 0.95
Accuracy:
- operating time ±5% or at ±1 s
Unbalance stage I2> (46)
Setting range: 10 – 70% (step 1%)
Definite time characteristic:
- operating time 1.0 – 600.0s s (step 0.1)
Inverse time characteristic:
- 1 characteristic curve
- time multiplier
Inv
1 – 50 s (step 1)
Starting time <40 ms
Resetting time <60 ms
Resetting ratio 0.97
Accuracy:
- starting ±3% of set value or
±5% or ±100 ms of rated value
- operate time ±1% or ±100 ms