ADB Stagelight EURODIM Twin Tech, Руководство по установке

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EURODIM TWIN TECH
User Manual - page 41
Issue 2.1 www.adbstagelight.com
Switch Off before unplugging
Since a dimmer module is rated above 32 A, hot
patching of modules is forbidden by IEC EN 60439 and
local regulations such as NF C 15-100.
It is highly advised that one must switch off the dimmer
protection (MCB, RCD, and RCBO) before withdrawing
or positioning a module. Additionally, the breaking of the
contacts is sequential: first control, then power, and
Earth last.
ADB has taken precautions that there is a minimal impact in case this rule is forgotten.
When a module is plugged into the cabinet – first the protection earth is connected, then
the supply and load supplies are connected and finally the control wiring connection is
performed. This is to avoid that any sparks are pulled because the dimmer has been
accidently fired.
9.7 Dimmer module protection by HRC fuse
Each power module is protected by a High Rupturing Capacity supply fuse (HRC, 63 A, 50
kA). This HRC fuse is located in the supply cabling compartment, on the left hand side of
the cabinet.
Each individual circuit is supplied through an MCB or RCBO (MCB+RCD), in the module.
See next paragraph.
The protection in the main switchboard must be selected to ensure a proper fault current
protection in relation with the line distribution short circuit current.
9.8 Dimmer protection by MCB
All ADB EURODIM Twin Tech power modules are standard equipped with MCBs per
dimmer channel. The MCBs comply with EU rules and protect the wiring against overload
and short- circuit.
Please note that in unfavorable fault conditions, both the dimmer MCB and the HRC
supply fuse may trip. In the event of severe damage to the thyristor modules, additional
protection circuitry may intervene and will limit the fault to the dimmer cabinet.
The dimmer module should be removed or repaired first. Other elements should only be
checked after the faulty dimmer is removed or repaired.
9.9 Residual Current Devices (RCD Ground Fault Protection)
EURODIM Twin Tech DimSwitch Thyristor modules are optionally available with an RCD
per module, or an RCBO (MCB+RCD) per dimmer.
Warning: RCDs and common Neutral wires.
To solve a particular problem, or with some multicore
lay-outs, you may consider using a single (large size)
Neutral wire for a group of dimmers.
If the RCD protection is provided, then the following rule
applies: the “common neutral” should be common only to
dimmers supplied by the same RCD. Failing to do so will
invariably result in nuisance tripping of an RCD.