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2.5
Circuit breakers - The recommended input and output breaker ratings are given in
table 2.4.1. Values not shown may be interpolated. Due to the fact that breaker ratings jump
in large steps it is strongly recommended that adjustable trip level MCCBs are used. In this
way a high degree of protection may be achieved. The input MCCB should be of a type
suited for use with inductive loads (with a high initial surge current). The output breaker
should be chosen to suit the nature of the load.
Incoming connections - The three incoming lines should be connected to the
2.6
terminals marked R1 S2 T3 on the terminal panel in the section marked INCOMING
MAINS. 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
2.7
terminals marked R1 S2 T3 on the terminal panel in the section marked OUTGOING
MAINS. 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.
INCOMING MAINS
R1 = Phase 1 in
S2 = Phase 2 in
T3 = Phase 3 in
N = Fully rated neutral in
E = Supply earth
OUTGOING MAINS
R1 = Phase 1 out
S2 = Phase 2 out
T3 = Phase 3 out
N = Fully rated neutral out
E = Load Earth
Connections should be made using ring terminals
or using the screw terminals provided.
Ensure connections are tight.
2. Installation (DS Version)
Safety - Under no circumstances should any work be carried out on the unit
2.1
unless the supply is 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.
THREE PHASE AUTOMATIC VOLTAGE REGULATOR
ISOLATE BEFORE HANDLING CONNECTIONS
OUTGOING MAINS
R1
N
N
INCOMING MAINS
R1
Diagram 2.6.1 Terminal Arrangement
R1
S2
N
E
Sollatek UK Ltd.
http://www.sollatek.com
Issue: Jan 2016
S2
T3
E
E
T3
S2
R1 S2
T3
T3
E
N
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