VAMP Ltd
Motor protection relay
Technical Description
VAMP 150
VM150.EN005
Vamp 24h support phone : +358 (0)20 753 3264
1
Table of Content
1.
Introduction ............................................................................3
1.1.
Application ..........................................................................3
1.2.
Main features.......................................................................3
2.
Functions .................................................................................5
2.1.
Principles of the numerical protection technique .........5
2.2.
Relay protection functions ................................................7
2.2.1.
Overcurrent protection I>, I>>, I>>> (50/51)..........7
2.2.2.
Stall protection I
st
> (48) ...........................................11
2.2.3.
Thermal overload stage T> (49M) .........................13
2.2.4.
Unbalance protection I2> (46) ..............................16
2.2.5.
Incorrect phase sequence protection I2>> ........17
2.2.6.
Undercurrent protection I< (37).............................18
2.2.7.
Sensitive earth-fault protection I
0
>(50/51N) ........18
2.2.8.
Frequent start protection N> (66)..........................20
2.2.9.
Arc fault protection (option) ArcI> (51L>), ArcI
0
>
(51NL>) ......................................................................22
2.2.10.
Circuit-breaker failure protection CBFP (50BF) ...24
2.3.
Measurement functions of the relay..............................25
2.4.
Output relay and blocking functions.............................25
2.4.1.
Output relay matrix .................................................26
2.4.2.
Blocking matrix .........................................................26
2.5.
Communication ................................................................27
2.5.1.
PC port ......................................................................27
2.5.2.
Remote control connection ..................................27
2.6.
Disturbance recorder .......................................................28
2.7.
Self-supervision...................................................................29
3.
Application examples .........................................................30
3.1.
Using the alarm of T> stage for restart inhibition ..........30
3.2.
Trip circuit supervision .......................................................32
4.
Connections .........................................................................34
4.1.
Digital input ........................................................................34
4.2.
Auxiliary voltage................................................................35
4.3.
Output relays .....................................................................35
4.4.
Serial communication connections ...............................35
4.5.
Current transducer............................................................35
4.6.
Arc protection ...................................................................36
4.7.
Block diagram ...................................................................37
4.8.
Connection diagram .......................................................38
5.
Technical data .....................................................................39
5.1.
Connections ......................................................................39
5.1.1.
Measuring circuitry ..................................................39
5.1.2.
Auxiliary voltage ......................................................39
5.1.3.
Digital input...............................................................39
5.1.4.
Trip contacts (T1 and T2).........................................40
5.1.5.
Alarm contacts (A1...A3) and IF............................40
