VAMP 50 User Manual

9.3 Protection stages 9 Technical data Technical description
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9.3.2. Frequent start protection
Frequent start protection N> (66)
Settings:
- Max motor starts
- Min time between motor starts
1 – 20
0.0 – 100 min. (step 0.1 min)
9.3.3. Voltage protection
Single-phase overvoltage stages U>, U>> and U>>> (59) ***
Overvoltage setting range: 50 - 150 %U
n
(U>)
50 - 160 %U
n
(U>>, U>>>)
Definite time characteristic:
- operating time 0.08
**)
- 300.00 s (step 0.02) (U>, U>>)
0.06
**)
- 300.00 s (step 0.02) (U>>>)
Release delay 0.06 - 300.00 s (step 0.02) (U>)
Hysteresis 0.1 - 20.0% (step 0.1%) (U>)
Starting time Typically 60 ms
Resetting time <95 ms
Resetting ratio 0.97 (depends on the hysteresis setting)
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.
***) Only when measurement option is 1Line (line-to-line voltage) or 1Phase (phase-to-neutral
voltage). A complete three phase voltage protection is not possible with VAMP 52.
Single-phase undervoltage stages U<, U<< and U<<< (27) ***
Undervoltage setting range 20 - 120 %U
n
Definite time characteristic:
- operating time 0.08
**)
- 300.00 s (step 0.02) (U<)
0.06
**)
- 300.00 s (step 0.02) (U<<, U<<<)
Release delay 0.06 - 300.00 s (step 0.02) (U<)
Hysteresis 0.1 - 20.0% (step 0.1%) (U<)
Self-blocking value of the undervoltage 0 - 80 %U
n
Starting time Typically 60 ms
Resetting time <95 ms
Resetting ratio 1.03 (depends on the hysteresis setting)
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.
***) Only when measurement option is 1Line (line-to-line voltage) or 1Phase (phase-to-neutral
voltage). A complete three phase voltage protection is not possible with VAMP 52.

VAMP 50 Specifications

General

Brand	VAMP
Model	50
Category	Relays
Language	English