VAMP 52 - 9.3.2. Frequent start protection; 9.3.3. Voltage protection

To Next Page

To Previous Page

9.3 Protection stages 9 Technical data Technical description

222

VAMP 24h support phone +358 (0)20 753 3264 VM50.EN004

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

(U>)

50 - 160 %U

(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

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