User's Manual

6
To be used only for the purpose for which it is submitted. All rights reserved to AMDS LLC. Reproduction without written
consent is prohibited.
AMDS CONFIDENTIAL
1.5. Block Diagram
1.5.1. Power System
!!! Danger !!!
Hazardous AC voltages capable of producing severe electrical shock
are present at various locations in the TGB. Exercise caution when
working inside the enclosure, to assure that contact is not made with
and electrical termination.
!!! Warning !!!
The batteries are a source of energy and can be hazardous if
shorted. Exercise caution.
1.5.1.1. AC Power – Indoor
AC Power is supplied to the rectifier through a rack mounted power
strip with integral ON/OFF switch and surge protection.
1.5.1.2. AC Power – Outdoor
AC Power enters the outdoor enclosure through the bottom of the
cabinet. The rectifier plugs into the surge protected, GFI outlet located
in the bottom of the cabinet.
1.5.1.3. DC Power
An FCC, Part 15, Class B compliant rectifier (battery charger) converts
commercial power (120/220VAC) to 24VDC power to the equipment
chassis, heat exchanger, fans, intrusion alarm, and batteries. In the
event of commercial power failure, the rectifier provides uninterrupted
DC power by switching over to battery backup.
1.5.1.4. Fuses and Breakers
The TGB contains one 10A circuit breaker/disconnect to protect/control
power to the electronics chassis.
1.5.1.5. Grounding
The ground bus bar MUST be connected to the site’s HALO ground
using an insulated conductor of sufficient size. All transient voltage
protectors (antenna, commercial power, TELCO lines) are grounded to
this bus bar. Failure to properly ground the TGB equipment presents
a risk to not only the TGB electronics, but other customers’ equipment
at the site as well.
A qualified electrician must perform this connection. Consult a local
electrician, or site engineer, for size requirements.