VAMP 140 - Test Voltages; Mechanical Tests; Environmental Conditions; Casing

VAMP 140 Overcurrent and earth-fault relay
Technical description
VAMP Ltd
46
Vamp 24h support phone +358 (0)40 573 6316 VM140.EN011
5.2.2. Test voltages
Insulation test voltage (IEC 60255-5) 2 kV, 50 Hz, 1 min
Surge voltage (IEC 60255-5)
5 kV, 1,2/50 µs, 0,5 J
5.2.3. Mechanical tests
Vibration (IEC 60255-21-1) 10 - 60 Hz, amplitude ±0.035 mm
60 - 150 Hz, acceleration 0.5g
sweep rate 1 octave/min
20 periods in X-, Y- and Z axis direction
Shock (IEC 60255-21-1) half sine, acceleration 5 g, duration 11 ms
3 shocks in X-, Y- and Z axis direction
5.2.4. Environmental conditions
Operating temperature -10 to +55 ×C
Transport and storage temperature -40 to +70 ×C
Relative humidity < 75% (1 year, average value)
< 90% (30 days per year, no condensation
permitted)
5.2.5. Casing
Degree of protection (IEC 60529) IP20
Dimensions (W x H x D) 99 x 155 x 225 mm
Weight 2.3 kg
5.3. Protection stages
5.3.1. Overcurrent protection
Overcurrent stage I> (50/51)
Current setting range: 0.10 – 5.00 pu
Definite time characteristic:
- Operating time 0.08 - 300.00 s (step 0.02)
Inverse time characteristic:
- 4 characteristic curve sets: (IEC60255-
3)
- Time multiplier k
EI, VI, NI, LTI *)
0.05 – 3.20
Starting time <60 ms
Resetting time <80 ms
Resetting ratio 0.97
Inaccuracy:
- Starting ±2% of set value
- Operating time definite time
- Operating time inverse time
±1% or ±30 ms
±5% or at least ±30 ms (I< 50 x In)
*) EI = Extremely Inverse, VI = Very Inverse, NI = Normal inverse, LTI = Long Time Inverse