Mic Non-Ir Power Supply Units; Printed Circuit Board Earth Link - Bosch MIC Series Installation Manual

20 en | MIC Non-IR Power Supply Units
3

MIC Non-IR Power Supply Units

Use this chapter to install the following MIC power supply
units:
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–
–
The MIC power supplies provide power, telemetry and video
connections for a single MIC camera appropriate for the power
supply type.
All non-IR MIC power supplies have the same layout and wiring
procedure; only the input voltages and fusing vary between the
230 VAC, 115 VAC and the 24 VAC power supplies.
DANGER! ELECTRICAL SHOCK HAZARD
Ensure the power is disconnected prior to opening the power
supply enclosure.
Power must be disconnected before replacing any fuse in the
MIC PSU.
The MIC power supplies have a separate internal shield
covering the power cable input head-end (HD1).
Only suitably qualified persons should remove this shield and
connect the mains power cable, the shield MUST be re-fitted
and fully secured prior to connecting the power.
The mains supply cable shall have conductors of a maximum
size of 12 AWG.
A readily accessible disconnect device (circuit breaker) shall be
incorporated externally to the equipment. The recommended
rating is 15 A.
3.1

Printed Circuit Board Earth Link

The Printed Circuit Board (PCB) has one link option next to the
add-on card slot, shown in Figure 3.1 below, allowing the power
supply to be set up for different earthing schemes.
The earth link should be broken if there is a separate
connection between the video screen and the earth. This
usually occurs on copper connected systems where all the
copper video coaxial cables are taken back to the control room
F.01U.141.598 | 1.0 | 2009.11
MIC-240PSU-UL
MIC-115PSU-UL
MIC-24PSU-UL
Installation Manual
MIC Series Power Supplies
Bosch Security Systems, Inc.