Table des Matières
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THREE PHASE AUTOMATIC VOLTAGE REGULATOR Issue: Jan 2016
Cable and terminals - Before any connections can be made the incoming and outgoing cable sizes have
2.4
to be selected and, on 200A units and above, the appropriate ring terminals fitted. (See Table 2.4.1). Cable size may
be selected using values of current given in table 2.4.1 bearing in mind the usual limiting factors such as volt drop,
heating, etc. Note that the input and output currents can differ by 40%. This means that a larger cable size may
have to be employed on the input than the output.
Output Amps/ph
10
20
30
50
75
100
150
200
300
400
500
600
Table 2.4.1
Circuit breakers – Suitably rated input and output circuit breakers are built in to the AVR. Incoming and
2.5
outgoing mains connections are made directly to the terminals of the circuit breakers (see below).
Incoming connections - The three incoming lines should be connected to the terminals marked R1 S2 T3
2.6
on the circuit breaker in the section marked INPUT C.B. The incoming neutral is connected to the N terminal and
the system earth is connected to the E terminal. N.B. The AVR must be supplied with an incoming neutral which
should be fully rated. Care should be taken to ensure that all terminals are securely tightened. See
diagram 2.6.1
Outgoing connections - The three outgoing lines should be connected to the terminals marked R1 S2
2.7
T3 on the circuit breaker in the section marked OUTPUT C.B. The outgoing neutral should be connected to the N
terminal and the load earth to the E terminal. N.B. All neutrals should be fully rated. Care should be taken to ensure
that all terminals are securely tightened. See diagram 2.6.1 Ensure phase rotation continuity from
input to output.
INPUT SIDE
R1 = Phase 1 in
S2 = Phase 2 in
T3 = Phase 3 in
N = Fully rated neutral in
E = Supply earth
OUTPUT SIDE
R1 = Phase 1 out
S2 = Phase 2 out
T3 = Phase 3 out
N = Fully rated neutral out
E = Load Earth
kVA
(415V)
7.2
14
21
36
54
72
108
144
216
288
360
431
Connections should be made
using ring terminals or using
the screw terminals provided.
Ensure connections are tight.
kVA
(400V)
6.9
13.8
20.7
34.5
51.7
69
103.5
138
207
276
345
414
R1
S2
N
N
R1
S2
R1
S2
T3
INPUT C.B.
N
E
Sollatek UK Ltd.
http://www.sollatek.com
Diagram 2.6.1 Typical Terminal Arrangement
Page 5
kVA
(380V)
6.6
13.2
19.8
33
49.5
66
99
132
198
264
330
396
T3
E
E
T3
R1 S2
T3
OUTPUT .CB.
E
N
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