Table des Matières
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THREE PHASE AUTOMATIC VOLTAGE REGULATOR Issue: Jan 2016
1. Unpacking and Inspection
It is possible that the unit will have sustained damage during transit. The following procedure
should be followed immediately upon receipt of the unit.
Crate/Packaging - Check for transit damage.
1.1
Cabinet/Casework - Check for visible signs of damage to exterior panels, doors and fittings. If cracks,
1.2
scratches or dents are visible there is a chance of internal damage. Particular attention should be paid to the
terminal panel.
Internal components - Unlock the door using the key provided. Inspect for damage to the
1.3
transformers, PCBs and other components. All mountings should be tight and there should be no sign
of movement of the transformers.
Internal wiring - All wiring connections should be checked to ensure that transit vibration has not
1.4
loosened screw terminals.
If inspection reveals problems in the above or other areas, the carrier should be notified as
soon as possible in writing.
2. Installation (Standard Version)
Safety - Under no circumstances should any work be carried out on the unit unless the supply is
2.1
isolated.
Positioning - The unit should be sited indoors on a firm, level, dry surface, away from sources of heat, dust,
2.2
vibration or moisture. A position allowing access on all four sides to permit preventative maintenance would be
advantageous.
Ventilation - The unit should be positioned such that a free flow of air is available. It is especially
2.3
important to ensure that cooling fan outlets are free from obstruction. A free space of at least 300mm should be
left in all directions around the AVR.
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. The appropriate breaker sizes are also given. 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
kVA (415V)
Amps/ph
10
7.2
20
14
30
21
50
36
75
54
100
72
150
108
200
144
300
216
400
288
500
360
600
431
Table 2.4.1
kVA
Input A
(240V)
(Max)
4.2
14
8.1
28
12
41
21
69
31
103
42
138
62
207
83
275
125
413
166
550
208
690
249
830
Input
Output
MCCB
MCCB
16
10
32
20
50
32
80
50
100
80
160
100
200
160
320
200
400
320
630
400
800
630
1000
630
Page 3
Ring
Size mm
8
8
8
8
8
8
8
16
16
16
16
16
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