ETC Unison Auxiliary Enclosure User Manual

Auxiliary Enclosure Series
Installation Manual

Revision A

Copyright © 2008 Electronic Theatre Controls, Inc.

All Rights reserved.

Product information and specifications subject to change.

Part Number:

7183M2110

Released: 08/2008

Rev A

ETC®, Unison®, EDMX™ are either registered tr ademarks or trademarks of Electronic Theatre Controls, Inc. in
the United States and other countries.

All other trademarks, both marked and not marked, are the property of their respective owners.

ETC permits the reproduction o f materials in this manual only for non-commercial pur pose s. All other rights are
reserved by ETC.

ETC int en ds this documen t, whet her printe d or electronic, to b e provided in i ts entirety.

Table of Contents

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Warnings and Notice Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Contacting ETC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Unison Auxiliary Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Prepare for Installation . . . . . . . . . . . . . . . . .4

Unpack and Inspect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Main Circuit Breaker Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Using 90°C Wire. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Maximum Current Draw of Enclosures . . . . . . . . . . . . . . . . . . . . . . .5

Short Circuit Current Rating (SCCR) . . . . . . . . . . . . . . . . . . . . . . . . .5

Where to Install the Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Clearance Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Enclosure Dimensions and Weights . . . . . . . . . . . . . . . . . . . . . .6

Installation Environment Requirements . . . . . . . . . . . . . . . . . . . .7

Wire Routing and Specification . . . . . . . . . . . . . . . . . . . . . . . . . .7

Install Enclosures . . . . . . . . . . . . . . . . . . . . .9

Mounting Auxiliary and DRd Enclosures Together. . . . . . . . . . . . . . .9

Rough-in Conduit and Wiring . . . . . . . . . . .11

Rough-in Line Conduit to the Auxiliary Enclosure . . . . . . . . . . . . . .12

Connect Line Power . . . . . . . . . . . . . . . . . .14

Final Installation and Power Up . . . . . . . . . 18

Check Main Power Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Sealing Enclosure Air Leaks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Table of Contents i

Introduction

Welcome to the installation manual for Unison® AX series auxiliary enclosures. This
manual contains the procedures for safe and efficient installation of an AX main breaker or
AX main lug auxiliary enclosure, and the cross-bussed AX12X auxiliary enclosure.

AX Series Auxiliary Enclosures

Series Voltage Notes

AX6-MCB-1-150 100-120 VAC 150A main breaker for DRd6 – 1Ø, 3-wire

AX6-MCB-3-100 100-277 VAC 100A main breaker for DRd6 – 3Ø, 4-wire

AX12-MCB-1-300 100-120 VAC 300A main breaker for DRd12 – 1Ø, 3-wire

AX12-MCB-3-200 100-277 VAC 200A main breaker for DRd12 – 3Ø, 4-wire

AX12X Series Cross-bussed Auxiliary Enclosures

Series Voltage Notes

AX12X-MCB-1-400 100-120 VAC 400A main breaker for (2) DRd12 – 1Ø, 3-wire

AX12X-MCB-3-400 100-277 VAC 400A main breaker for (2) DRd12 – 3Ø, 4-wire

AX12X-ML-1-600 100-120 VAC

AX12X-ML-3-400 100-277 VAC

Main Lug with cross-bussing for (2) DRd12 enclosures – 1Ø,
3-wire

Main lug with cross-bussing for (2) DRd12 enclosures – 3Ø,
4-wire

Warnings and Notice Conventions

These symbols are used in ETC documentation to alert you to danger or important
information:

Note:

CAUTION:

WARNING:

WARNING:

Notes are helpful hints and information that is supplemental to the main text.

A Caution statement indicates situations where there may be undefined or
unwanted consequences of an action, potential for data loss or an equipment
problem.

A Warning statement indicates situations where damage may occur, people
may be harmed, or there are serious or dangerous consequences of an
action.

RISK OF ELECTRIC SHOCK! This warning statement indicates situations
where there is a risk of death by electric shock.

1 Unison Enclosure Installation

Contacting ETC

For questions about Unison enclosure system delivery, contact ETC Systems Group. For
general information, your most convenient resources are the references provided in this
manual. To search more widely try the ETC web site at www.etcconnect.com.

For technical questions about Unison enclosure systems, contact ETC Technical Services
directly at one of the offices listed below. Emergency service is available from all ETC
offices outside of normal business hours. When calling for assistance, please have the
following information handy:

• Your location and job name.

• A complete list of ETC equipment.

• A complete list of other installed products and components connected to the system
you are troubleshooting.

• DMX control source, if any.

Americas

ETC International
Technical Services Department
3031 Pleasant View Road
Middleton, WI 53562
800-775-4382 (USA, toll-free)
[phone]
[e-mail]

Asia

ETC Asia, Ltd.
Technical Services Department
Room 1801, 18/F, Tower 1, Phase 1
Enterprise Square
9 Sheung Yuet Road
Kowloon Bay, Kowloon, Hong Kong
[phone]
[e-mail]

United Kingdom

Electronic Theatre Controls, Ltd.
Technical Services Department
26 - 28 Victoria Industrial Estate
Victoria Road,
London W3 6UU, UK
[phone]
[e-mail]

Germany

Electronic Theatre Controls, GmbH
Technical Services Department
Ohmstrasse 3
93607, Holzkirchen, Germany
[phone]
[e-mail]

Please email comments about this manual to: [e-mail]

Introduction 2

Unison Auxiliary Enclosure

Main LugMain Circuit

Breaker

A main circuit breaker auxiliary enclosure is equipped with breakers that are sized for
maximum load capacity for the DRd configuration.

AX Series Enclosure Options

Unison AX series enclosures are designed to provide main lug or main circuit breaker input
feed provisions for single DRd6 or DRd12 applications.

• AX6-MCB-1-150 – includes main breaker for DRd6, 150A/1Ø, 3-wire

• AX6-MCB-3-100 – includes main breaker for DRd6, 100A/3Ø, 4-wire

• AX12-MCB-1-300 – includes main breaker for DRd12, 300A/1Ø, 3-wire

• AX12-MCB-3-200 – includes main breaker for DRd12, 200A/3Ø, 4-wire

AX12X Series Enclosure Options

Unison AX12X cross-bussing enclosures are designed to provide main lug or main breaker
input feed termination for cross-bussed DRd12 applications.

• AX12X-ML-1-600 – includes cross-bussed main lugs for (2) DRd12, 600A/1Ø, 3-wire

• AX12X-ML-3-400 – includes cross-bussed main lugs for (2) DRd12, 400A/3Ø, 4-wire

• AX12X-MCB-1-400 – includes main breaker for (2) DRd12, 400A/1Ø, 3-wire

• AX12X-MCB-3-400 – includes main breaker for (2) DRd12, 400A/3Ø, 4-wire

Note:

A 600A single phase main circuit breaker is not available due to NEC wire bending
space limitations.

3 Unison Enclosure Installation

Chapter 1

Prepare for Installation

Unpack and Inspect

Before you begin installation, check your shipment and confirm it arrived complete and
undamaged.

Step 1: Check the shipping container for physical damage.

Step 2: If you find damage, document it to help with a claim against your shipper.

Step 3: Unpack your order and check the contents against the packing list to be sure

your order is complete.

Step 4: If you discover a problem, call ETC Systems Group at [phone].

Main Circuit Breaker Protection

Before you begin installing the Unison auxiliary enclosure, make sure you have installed a
main circuit breaker cabinet or other readily accessible input power disconnect device. In
certain bussed and cross-bussed systems, this disconnect device may be the Unison AX
series auxiliary enclosure with a main circuit breaker.

WARNING:

Note:

Auxiliary enclosures installed without an accessible power disconnect
device cannot be serviced or operated safely. Follow all local codes and
restrictions.

Before removing dimmer or control modules for service, de-energize the main
feed to the dimmer rack and follow appropriate Lockout and Tagout procedures
as described in NFPA Standard 70E. It is important to note that electrical
equipment such as dimmer enclosures can present an arc flash safety hazard if
improperly serviced. This is due to available large Short Circuit Currents on the
feeders of the equipment. Any work on energized equipment must comply with
OSHA Electrical Safe Working Practices.

Using 90°C Wire

The AX MCB cabinets are listed for both copper and aluminum feed wiring, while the ML
cabinets are listed for Copper wire only. Bus cabling to DRd enclosures must use the

included copper cable to satisfy the requirement that the DRd is fed by copper wire only and
to meet UL bend radius limitations. All terminations in the AX and DRd cabinets are listed
for 75°C.

Note:

The terminals may be marked AL9CU indicating a 90°C rating; this is the lug
manufacturer’s rating - not the tested UL listing for the AX enclosure.

1 Prepare for Installation 4

Maximum Current Draw of Enclosures

Enclosure
Type

AX6

AX12

AX12X

a)With 15A modules.

Phase Type

Single phase (1Ø)
Three phase (3Ø)
Single phase (1Ø)
Three phase (3Ø)
Single phase (1Ø)
Three phase (3Ø)

UL Market
Maximum Current
Draw

120A –

80A 60A
240A –
160A 120A
480A –
320A 240A

240V Maximum
Current Draw

Short Circuit Current Rating (SCCR)

SCCR at

Enclosure Configuration

DRd6 with AX6 main circuit breaker enclosure 100,000A 65,000A
DRd12 with AX12X (cross-bussed) main lug enclosure 22,000A 22,000A
DRd12 with AX12 main circuit breaker enclosure 100,000A 65,000A
DRd12 with AX12X main circuit breaker enclosure 100,000A 65,000A

a)Ratings are for three phase systems.

100-120

a

VAC

a

SCCR at

240-277

a

VAC

5 Unison Enclosure Installation