.......................................................................................................................................................... 3Temperature

.......................................................................................................................................................... 3Humidity

.......................................................................................................................................................... 3Elevation

................................................................................................................................... 33 Electrical

................................................................................................................................... 34 Receptacle Ratings

................................................................................................................................... 45 EMC Verification

Part II Installation 5

................................................................................................................................... 51 Instructions

................................................................................................................................... 52 Guidelines

Part III Mounting 6

Part IV Optional Local Monitoring 7

................................................................................................................................... 71 Power Meter

................................................................................................................................... 82 Current Meter

Part V Service/Tech Support 8

................................................................................................................................... 81 Service and Maintenance

................................................................................................................................... 82 More Technical Support

Part VI Table of Figures 9

Part VII Revision History 9

Specifications 3

GM1107 - ATS User Guide

1 Specifications

1.1 Overview

The AT Series Auto-Transfer Power Distribution Units (PDUs) provide automatic

transfer switching from primary (Source A) to secondary (Source B) in the event of

primary source failure. The PDU automatically transfers back to the primary source

when it becomes available. Front mounted LED’s indicate availability of power at

Source A and Source B. AT Series Auto-Transfer PDUs can optionally be configured

with a Geist Current Meter that provides local monitoring and display of each output

circuit current.

1.2 Environmental

1.2.1 Temperature

Operating: 10°C (50°F) min 45°C (113°F) max

Storage: -25°C (-13°F) min 65°C (149°F) max

1.2.2 Humidity

Operating: 5% min 95% max (non-condensing)

Storage: 5% min 95% max (non-condensing)

1.2.3 Elevation

Operating: 0 m (0 ft) min 2000 m (6561 ft) max

Storage: 0 m (0 ft) min 15240 m (50000 ft) max

1.3 Electrical

See nameplate for unit ratings.

1.4 Receptacle Ratings

NEMA 5-15R or L5-15R 125 Volts, 15 Amp

NEMA 5-20R or L5-20R 125 Volts, 20 Amp

NEMA 6-20R or L6-20R 250 Volts, 20 Amp

IEC-320 C13 125/250 Volt, 15 Amp (per Receptacle Bank)

IEC-320 C19 125/250 Volt, 20 Amp

Auto-Transfer Rack Power Distribution Unit4

GM1107 - ATS User Guide

1.5 EMC Verification

This Class A device complies with part 15 of the FCC Rules. Operation is subject to

the following two conditions: (1) This device may not cause harmful interference, and

(2) this device must accept any interference received, including interference that may

cause undesired operation.

This Class A digital apparatus complies with Canadian ICES-003.

Cet appareil numérique de la classe A est conforme à la norme NMB-003 du Canada.

Warning: Changes or modifications to this unit not expressly approved by the party

responsible for compliance could void the user’s authority to operate this equipment.

FCC and Canadian ICES-003 requirements for units with Current Monitoring Meter:

The ferrite core shipped with the unit must be placed around the Ethernet cable close

to the PDU.

Specifications 5

GM1107 - ATS User Guide

2 Installation

2.1 Instructions

1. Using appropriate hardware, mount PDU to rack (see Mounting section for

additional instructions).

2. Plug PDU into de-energized, Phase Synchronized branch circuit receptacles.

3. Connect devices into PDU’s output receptacles. It is recommended that the

devices are turned off until all devices are connected to PDU

4. Turn on branch circuit for Source A to energize PDU.

5. Turn on branch circuit for Source B.

6. Power on devices. Sequential power up is recommended to avoid high inrush

current.

2.2 Guidelines

Warning: Source power must be Phase Synchronized, high voltage potential may

result in relay failure when sources are not Phase Synchronized.

Some loads may pull high inrush current when switching power sources. Do not

overload ATS to prevent relay failure and tripping branch circuit protection.

If the PDU is installed in a cabinet the ambient temperature of the rack should be

no greater than 45 C.

Install the PDU such that the amount of airflow required for safe operation of

equipment is not compromised.

Mount the PDU so that a hazardous condition is not achieved due to uneven

mechanical loading.

Follow nameplate ratings when connecting equipment to the branch circuit. Take

into consideration the effect that overloading of the circuits might have on over-

current protection and supply wiring.

The PDU relies on the building installation for protection from over-current

conditions. A certified overcurrent protection device is required in the building

installation. The overcurrent protection device should be sized according to the

PDU’s nameplate ratings and local/national electrical codes.

Reliable earthing of rack-mount equipment should be maintained. Particular

attention should be given to supply connections other than direct connections to

the branch circuit. The PDU must be connected to an earthed socket-outlet.

The PDU is intended for Restricted Access Locations only and only qualified service

personnel should install and access the PDU.

For pluggable equipment, install the PDU so that the input plug or appliance

coupler may be disconnected for service.

Sequential power-up of devices powered by the PDU is recommended to avoid

high inrush current.

Caution: Disconnect all power cords before servicing.

The PDU is intended for use with TN or TT power supply systems

Auto-Transfer Rack Power Distribution Unit6

GM1107 - ATS User Guide

3 Mounting

Flush Mount Brackets (FM)

Using flush mount brackets, attach PDU to rack as shown

Adjustable Mount Brackets (AM)

Using adjustable mount brackets, attach PDU to rack as shown

Mounting 7

GM1107 - ATS User Guide

23" Conversion Mounting Brackets (23-RM)

Using conversion mounting brackets, attach 19” PDU to 23” rack as shown

4 Optional Local Monitoring

4.1 Power Meter

The Geist PM-1 power meter is a low-power, high accuracy meter capable of

measuring true RMS Current, Voltage, Power, and Power Factor. These values are

individually shown on an easy to read, 4-digit LED Display, which continuously scrolls

through the four different measured values. Each one of these displayed parameters

is defined below. The Power Meter will automatically begin cycling through the

displayed values when the PDU is connected to AC Mains power.

Current: PDU output current draw measured in true RMS Amps

Voltage: PDU output voltage measured in true RMS Voltage

Power: PDU output power measured in Watts – referred to as real or active

power

Power Factor: Ration of real PDU output power to apparent PDU output power

Auto-Transfer Rack Power Distribution Unit8

GM1107 - ATS User Guide

Power Meter Display

4.2 Current Meter

The Geist CM-1 current meter is a low-power, high accuracy meter capable of

measuring true RMS Current. The value of current is continuously shown on an easy

to read, 4-digit LED Display. The Current Meter will automatically begin to display

value of output current when the PDU is connected to AC Mains power.

Current Meter Display

5 Service/Tech Support

5.1 Service and Maintenance

No service or maintenance is required. Do not attempt to open the PDU or you may

void the warranty. No serviceable parts inside. It is recommended that power be

removed from the unit before installing or removing any equipment.

5.2 More Technical Support

http://www.geistglobal.com

(800) 432-3219

Email: support@geistglobal.com

Or contact your distributor.

Table of Figures 9

GM1107 - ATS User Guide

6 Table of Figures

Flush Mount Brackets (FM)

................................................................................................................................................................................ 6

Adjustable Mount Brackets (AM)

................................................................................................................................................................................ 6

23" Conversion Mounting Brackets (23-RM)

................................................................................................................................................................................ 7

Power Meter Display

................................................................................................................................................................................ 8

Current Meter Display

................................................................................................................................................................................ 8

7 Revision History

Revision

Date

Notes

Approved By

1.0

2/17/2011

Original Published Version

1.1

6/22/2012

Changed Logo and web

address

2.0

7/25/2014

Changed EM40 Display Page

and company’s name

3.0

1/31/2017

Removed EM and PM3 meter

information