Power Supply Installation And Setup; Hazardous Area Power Supply Installation - Bosch MIC440 Installation And Operation Manual

MIC440 Explosion Protected CCTV Camera System| Installation and Operation Manual
Power Supply Installation & Setup
CHAPTER 3
The Power Supply Units provide all the support functions for connecting the
MIC440 cameras to third party equipment, they comprise of the following products:
MIC-12PSU, MIC-240PSU, MIC-24PSU and MIC-115 PSU
The power supply provides power for a single MIC440 camera unit from a 12v DC
source (MIC-12PSU), a 240v AC source (MIC-240PSU), a 24v AC source (MIC-
24PSU) or a 115v AC source (MIC-115PSU). The transformer fitted to these
designs is a thermally protected and automatically cuts out if the transformer core
temperature exceeds 40 Degrees C. On cooling the transformer will become
operational again.
In addition the unit provides all the terminations required to connect a MIC440
camera to third party equipment.
A second independent 12v (600mA) power supply is also included to drive any
internally fitted optional interface cards.
Hazardous Area Power Supply Installation Instructions
CAUTION: The PSU enclosures are not Exd rated and must be
replaced with a certified enclosure if installed within a
hazardous area.
This product must only be installed by suitably trained
personnel in accordance with the relevant code of practice (e.g.
EN60079-14:1997).
Installation of the PSU within a hazardous area must have the standard PSU
enclosure replaced with an appropriate certified enclosure and four (4) Exd cable
glands (NOT Supplied), the power supply PCB is usually re-housed, by a third
party company, within an Exd enclosure which is then factory certified and shipped
to site. Follow all manufacturer's instructions when installing a third party Exd
enclosure, examples are shown on Page 15.
Bosch Security Systems
A maximum cable length of 25m is permitted as shown overleaf in Fig A, if the
PSU can be located in a Non-hazardous area near to the camera installation then
an Exd enclosure for the PSU may not be required as shown in Figure B on page
15.
MIC440
Figure A – Installation using Exd junction box
Issue 6
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