Alpha Standby Power Supplies User Manual

Standby Power Supplies - Quick Start Guide

Overview

Alpha GMX Uninterruptible Power Supplies are designed to power signal
processing equipment in cable television and broadband LAN distribution
systems.

During AC line operation, AC power is converted into a quasi square wave
and regulated by a ferroresonant transformer at the selected output voltage.
The regulated voltage is connected to the load via VOUT ± terminal block
connections, and some power is directed to the battery charger to maintain a
fl oat charge on the batteries.

When the incoming AC line voltage signifi cantly deviates from normal, the
GMX Power Supply automatically switches from the AC line to Standby mode,
maintaining power to the load.

Key components include:

• Line Interactive Ferro Technology (LIFT)

• Wide input voltage range of ±30%

• Compact packaging with light-weight ferro

• Field programmable fl ash memory

• Built-in battery circuit breaker

• IEC style line cord
Battery Breaker

Pre-installation Checklist

To Ensure Operator Safety:

• Only qualifi ed personnel should install the power supply in accordance with

all applicable electrical codes.

• Use eye protection whenever working with batteries.

• Use only sealed, lead-acid type batteries with a minimum rating of 55Ah

(gelled-electrolyte or equivalent).

Unpacking and Inspection:

• Remove the GMX Power Supply from the shipping container. Verify that
the power supply (including Remote Temperature Sensor) and any other
ordered options have been included.

• Carefully inspect the contents of the shipping container. If any items are
damaged or missing, contact Alpha Technologies or the shipping company
immediately. Most shipping companies only have a short claim period.

Preinstallation Inspection:

• During shipping, movement of components may occur. Inspect the power
supply for possible shipping-related failures, such as loosened or damaged
connectors. If needed, inspect the interior for loose or damaged connectors.
Correct any discrepancies before proceeding with the power supply
installation.

• Do not install the power supply without performing a complete
preinstallation inspection and start-up test.

Status LEDs

Terminal Block

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2006 Alpha Technologies

Smart Display

Battery Input

Inverter

Cooling Fan

Battery Temperature

Probe Connector

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NOTE:

To download the latest revision of the GMX Technical Manual,
Alpha P/N 017-932-B0, visit www.alpha.com.

Or, call 1-800-863-3930 for assistance.

(7:00 AM to 5:00 PM Pacifi c Time)

017-932-B1-001, Rev. A, Effective 03/06

Standby Power Supplies - Quick Start Guide

Installation

NOTE:

Before applying power, verify AC input utility. Verify a low-resistance ground
is installed in accordance with applicable regional standards.

Installation Procedure

1. Turn Battery Breaker OFF.

2. Check battery cables for correct polarity (Red +, Black -).

3. Connect battery cables to battery input connector
(observe color/polarity).

4. Connect the Temperature Probe.

5. Connect the Local/Remote Indicator (LRI) to the terminal block (if
applicable).

6. Connect status monitoring connectors, including Tamper Switch (if
applicable).

7. Connect the GMX to the utility outlet.

8. Switch enclosure AC breaker ON; measure and verify correct AC
voltage at utility outlet.

9. Switch Battery Breaker ON.

10. Verify no alarms are present (it may take up to 60 seconds for the NO
BATTERIES alarm to clear).

11. Initiate a self-test by simultaneously pressing the DOWN arrow key and
ENTER key. Using a true RMS multimeter, verify VOUT voltage. Verify no
alarms are present. Abort the self-test by by simultaneously pressing the
DOWN arrow key and ENTER key.

12. Unplug the GMX line cord and turn OFF the battery breaker.

13. Verify Service Power Inserter (SPI) toggle switch in ON position (not ALT).

14. Connect the SPI (network load) to the terminal block. If you are not using an
SPI, connect the load directly to the VOUT terminals on the terminal block.
Observe proper polarity.

15. Plug in the GMX line cord and switch the Battery Breaker ON.

16. Perform live inverter test.

• Turn AC input breaker OFF.

• Verify GMX transfers to “Inverter” mode.

• Turn AC input breaker ON.

• Verify GMX transfers back to Utility.

CONGRATULATIONS!

The self-test and live-inverter tests have been successfully completed, the unit
is ready to be placed into service.

8

(Example)

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2006 Alpha Technologies

7,12,15

14

13

5

1,9

4

017-932-B1-001, Rev. A, Effective 03/06

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