Chapter 4: Product description
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12 | Installation, Operation & Maintenance Instructions EASYCHLORGEN
4.2.3 Power supply description
A dedicated, stand-alone power supply unit (PSU) is provided.
The PSU cabinet provides power for the whole of the
electrolyser system; AC power to the EASYCHLORGEN
control panel and DC power to the electrolyser. The cabinet
requires a 3Ø+N+E supply rated according to the model
capacity (refer to 5.1.3 Electrical Specifications).
The PSU cabinet should be located according to the installation
examples in section 7.4, in close proximity to the electrolyser
cabinet. DC connections between the PSU and the electrolyser
cabinet are facilitated by the flexible DC busbar (2m) and
clamp system provided.
Key:
1.
+ DC busbar clamp
2.
– DC busbar clamp
3.
Ventilation fan
4.
Control cable ports
5.
Generating indicator lamp, green.
6.
Power indicator lamp, white.
7.
Emergency Stop button, red
8.
Main electrical isolator
The white power indicator (6) is lit when a 3 phase AC power
source is available. The green generating indicator (5) is lit
when the electrolyser D.C. output power is available. A
ventilation fan (3) operates continuously to draw in air at the
base of the cabinet and discharge warm air through the vent
louvres at the top of the cabinet. The DC power supply
operation can be disabled by pressing the Emergency Stop
button.
NOTE:
When the Emergency Stop button is engaged, AC
power remains available to the EASYCHLORGEN control
panel for the purpose of communicating fault conditions and
allowing remote monitoring (option) via RS485/Modbus to
continue.
The operation of the main isolator (4) will disconnect power to
all circuits within the PSU cabinet.
For ease of maintenance the PSU contains modular DC power-
packs with self-regulating current output, short circuit and high
temperature protection. Each power-pack is equipped with
variable speed cooling fans which automatically regulate
according to internal temperatures. It is normal for changes in
the fan speed to occur during operation.
Cable Entry
The incoming 3Ø+N+E cable may enter the lower section of
the PSU cabinet only. For convenience of installation the entry
location of the cable may be at the discretion of the electrical
installation engineer and must be completed according to local
electrical codes.
