Xantrex Technology ACCB-L, ACCB-L-L1 User Manual

Sine Wave Plus Long
AC Conduit Box
Owner’s Guide

ACCB-L
ACCB-L-L1

Owner’s Guide

Sine Wave Plus Long AC Conduit
Box

Owner’s Guide

About Xantrex

Xantrex Technology Inc. is a world-leading supplier of advanced power electronics and controls with products from
50 watt mobile units to one MW utility-scale systems for wind, solar, batteries, fuel cells, microturbines, and backup
power applications in both grid-connected and stand-alone systems. Xantrex products include inverters, battery
chargers, programmable power supplies, and variable speed drives that convert, supply, control, clean, and distribute
electrical power.

Trademarks

Sine Wave Plus Long AC Conduit Box is a trademark of Xantrex International. Xantrex is a registered trademark of
Xantrex International.

Other trademarks, registered trademarks, and product names are the property of their respective owners and are used
herein for identification purposes only.

Notice of Copyright

Sine Wave Plus AC Conduit Box Long Owner’s Guide © June 2004 Xantrex International. All rights reserved.

Disclaimer

UNLESS SPECIFICALLY AGREED TO IN WRITING, XANTREX TECHNOLOGY INC. (“XANTREX”)

(a) MAKES NO WARRANTY AS TO THE ACCURACY, SUFFICIENCY OR SUITABILITY OF ANY
TECHNICAL OR OTHER INFORMATION PROVIDED IN ITS MANUALS OR OTHER DOCUMENTATION.

(b) ASSUMES NO RESPONSIBILITY OR LIABILITY FOR LOSS OR DAMAGE, WHETHER DIRECT,
INDIRECT, CONSEQUENTIAL OR INCIDENTAL, WHICH MIGHT ARISE OUT OF THE USE OF SUCH
INFORMATION. THE USE OF ANY SUCH INFORMATION WILL BE ENTIRELY AT THE USER’S RISK.

Date and Revision

June 2004 Revision A

Part Number

973-0031-01-01 Rev A

Contact Information

Telephone: [phone] (toll free North America)

1 360 925 5097 (direct)

Fax: [phone] (toll free North America)

1 360 925 5143 (direct)

Email: [e-mail]

Web: www.xantrex.com

About This Guide

Purpose

The purpose of this Owner’s Guide is to provide explanations and procedures for
installing, operating, maintaining, and troubleshooting the Sine Wave Plus Long
AC Conduit Box.

Scope

The Guide provides safety guidelines, and procedures for installing and operating
the Sine Wave Plus Long AC Conduit Box.

Audience

The Guide is intended for a skilled electrician or technician who needs to install
and operate the Sine Wave Plus Long AC Conduit Box. Installers should be
certified and familiar with all local and national codes regarding electrical
installations of this nature.

Organization

This Guide is organized into three chapters.

Chapter 1, “Introduction” provides a basic introduction to the design and purpose
of the Sine Wave Plus Long AC Conduit Box (ACCB-L).

Chapter 2, “Installation” provides installation and wiring instructions for the Sine
Wave Plus Long AC Conduit Box.

Chapter 3, “Operation” describes the different modes and operation of the AC
Bypass Switch(es) on the ACCB-L-L1, or for the second AC Bypass Switch
(ACCB-L-L2) if installed.

Warranty and product information is provided at the end of the guide.

Product Naming Conventions

ACCB-L refers to the Long AC Conduit Box without AC Bypass Switch.

ACCB-L-L1 refers to the Long AC Conduit Box with AC Bypass Switch.

ACCB-L-L2 refers to the ACCB-L-L1 with the field-installed ACCB-L2-PCK
(AC Bypass Switch assembly, with wiring, and an AC Bus Bar for Hot L2
connections) and is usually configured for dual operation.

Long AC Conduit Box refers to all products and is used in situations where all
three products are treated the same.

973-0031-01-01 Rev A iii

About This Guide

Conventions Used

The following conventions are used in this guide.

WARNING

Warnings identify conditions that could result in personal injury or loss of life.

CAUTION

Cautions identify conditions or practices that could result in damage to the unit or other
equipment.

Important:

serious as a caution or warning.

These notes describe things which are important for you to know, but not as

Abbreviations and Acronyms

AC Alternating Current

ACCB-L AC Conduit Box Long (with ground bar only)

ACCB-L-L1 AC Conduit Box Long (adds internal components for wiring)

ACCB-L-L2 AC Conduit Box Long (built on ACCB-L-L1 for dual configuration)

ACCB-L2-PCK AC Bypass Switch Assembly only (includes wiring)

ALM Auxiliary Load Module

AHJ Authority Having Jurisdiction

ASC Authorized Service Center

AWG American Wire Gauge

CEC Canadian Electrical Code

CSA Canadian Standards Association

DC Direct Current

EPO Emergency Power Off

GSM Generator Start Module

ICA Inverter Communications Adapter

ICM Inverter Control Module

ISC-S Inverter Stacking Control – Series

NEC National Electrical Code

RMA Return Material Authorization

UL Underwriters Laboratory

Related Information

You can find more information about Xantrex Technology Inc. as well as its
products and services at www.xantrex.com.

iv 973-0031-01-01 Rev A

Important Safety Instructions

WARNING

This chapter contains important safety and operating instructions for the Sine Wave Plus
Long AC Conduit Box (ACCB-L and ACCB-L-L1) and the ACCB-L-L2 (ACCB-L2-PCK
add-on package). Read and keep this Sine Wave Plus AC Conduit Box Long Owner’s
Guide for future reference.

1. Before installing the Long AC Conduit Box, read all instructions and
cautionary markings on the Long AC Conduit Box and all appropriate
sections of this guide.

2. Do not expose the Long AC Conduit Box to rain, snow, or spray.

3. To reduce risk of fire hazard, do not cover or obstruct the ventilation
openings.

4. Do not install the Long AC Conduit Box in a zero-clearance compartment.
Overheating may result. Minimum clearance for ventilation around the unit

must be twelve inches above and around the sides of the unit. See “Ventilation
Requirements” on page 2–5 for additional information.

5. Do not store anything flammable near the unit. Relocate anything flammable
to another location.

6. Xantrex offers CSA “approved” parts for installation into this product. Parts
purchased elsewhere are subject to approval by the local electrical authority.
See Figure 2-11 on page 2–16 for details.

7. The Long AC Conduit Box is designed to be permanently connected to your
Sine Wave Plus inverter. Xantrex recommends that all wiring be done by a
certified technician or electrician to ensure adherence to the local and national
electrical codes applicable in your application.

8. To avoid a risk of fire and electric shock, make sure that existing wiring is in
good condition and that wire is not undersized. Do not operate the Long AC
Conduit Box, or inverter, with damaged or substandard wiring.

9. To reduce the risk of electrical shock, disconnect all power to the Long AC
Conduit Box and the Sine Wave Plus Inverter/Charger before attempting any
maintenance or cleaning or working on the Long AC Conduit Box.

Safety

10. The Long AC Conduit Box is provided with an equipment-grounding bar
which must be connected to the inverter/system equipment ground.

973-0031-01-01 Rev A v

Safety

Explosive gas precautions

1. Working in the vicinity of lead-acid batteries is dangerous. Batteries generate
explosive gases during normal operation. Therefore, you must read this guide
and follow the instructions exactly before installing the Long AC Conduit
Box.

2. To reduce the risk of battery explosion, follow these instructions and those
published by the battery manufacturer and the manufacturer of the equipment
in which the battery is installed.

Certifications

CSA certified to the following standards:

• UL 1741-2001 (First Edition), and

• CSA C22.2 No. 107.1-01

vi 973-0031-01-01 Rev A

Contents

Important Safety Instructions

1

Introduction

Introduction - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–2
Specifications - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–4
AC Bypass Switch Assembly - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–6
Blockoff Plates - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–7

2

Installation

Preparing for the Installation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–2

Code Compliance - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–2
Installation Tools and Materials - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–2

Configuration Planning - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–3

Off-Grid Configurations - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–3
On-Grid Configurations - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–3

Pre-Installation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–4

Location - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–4
Service Planning - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–4
Ventilation Requirements - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–5
Removing and Replacing the Cover - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–6
Installing or Removing the Blockoff Plates - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–7
Knockout Preparation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–8
Installing Additional Breakers - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–10

Mounting - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–11

Mounting on the Xantrex Back Plate (XBP) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–11
Mounting on Plywood - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–13

Wiring - General - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–14

Accessing the AC Input/Output Terminal Block in the ACCB-L-L1 - - - - - - - - - - - - - - - - - 2–14
Wire Sizes and Disconnect Requirements - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–15

Wiring for Off-Grid Applications- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–19

Single Inverter Configurations (120 Vac) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–19
Step-down Configurations (240 Vac to 120 Vac) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–21
Step-up Configuration (Deep Well Pump) (120 Vac to 240 Vac) - - - - - - - - - - - - - - - - - - - 2–23
Dual Inverter Configurations (120 Vac and 240 Vac) - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–24

Wiring for On-Grid Applications - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–25

Single Inverter Configurations (120 Vac) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–25
Step-up Configurations (Utility Backup) (120 Vac to 240 Vac) - - - - - - - - - - - - - - - - - - - - 2–27
Dual Inverter Configurations (120 Vac and 240 Vac) - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–28

Additional Accessory Wiring - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–29

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -v

973-0031-01-01 Rev A vii

Contents

3

Operation

The AC Bypass Switch - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–2
Operating the AC Bypass Switch - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–2

Normal Operation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–3
Bypass Operation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–3
AC Input/Output Off - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–4

Dual Inverters: 240 Vac Loads - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–4

Warranty and Return Information

Index

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - IX–1

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - WA–1

viii 973-0031-01-01 Rev A

Figures

Figure 1-1 The Sine Wave Plus ACCB-L Basic- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–2
Figure 1-2 The Sine Wave Plus Long AC Conduit Box (ACCB-L-L1, and ACCB-L-L2)- - - - - - - - 1–3
Figure 1-3 ACCB-L Dimensions (not to scale) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–5
Figure 1-4 Bypass Switch Assembly in the ACCB-L-L1- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–6
Figure 1-5 Blockoff Plates - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–7
Figure 2-1 Shock Hazard Warning Label - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–4
Figure 2-2 Clearance Requirements for Ventilation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–5
Figure 2-3 Cover Removal and Replacement - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–6
Figure 2-4 The Blockoff Plate on the Long AC Conduit Box- - - - - - - - - - - - - - - - - - - - - - - - - - - 2–7
Figure 2-5 SW Plus Inverter, AC Side Showing Knockout Location - - - - - - - - - - - - - - - - - - - - - - 2–8
Figure 2-6 Knockouts Locations - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–9
Figure 2-7 Installing Additional Breakers on the DIN Rail - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–10
Figure 2-8 The Xantrex Back Plate - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–11
Figure 2-9 Installing the ACCB-L on the Backplate - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–12
Figure 2-10 Installing the ACCB-L to the SW Plus Inverter on Plywood- - - - - - - - - - - - - - - - - - - 2–13
Figure 2-11 ACCB-L Approved Internal Components - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–16
Figure 2-12 ACCB-L-L1 Internal Components (Factory installed) - - - - - - - - - - - - - - - - - - - - - - - 2–17
Figure 2-13 ACCB-L-L1 Internal Components with the Optional ACCB-L2-PKG Installed - - - - - 2–18
Figure 2-14 Wiring an Off-grid Application Using a Single Inverter - - - - - - - - - - - - - - - - - - - - - 2–19
Figure 2-15 Wiring an Off-grid Application Using a Single Inverter (No Sub Panel) - - - - - - - - - - 2–20
Figure 2-16 Wiring an Off-grid Application Using a Single Inverter and TX Autotransformer

in a Step-Down Configuration- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–21

Figure 2-17 Wiring an Off-grid Application Using a Single Inverter and TX Autotransformer

for a Step-Down Configuration (No Sub Panel) - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–22

Figure 2-18 Wiring an Off-grid Application Using a Single Inverter and TX Autotransformer

for a Step-Up Configuration for a Deep Well Pump Application- - - - - - - - - - - - - - - - 2–23
Figure 2-19 Wiring an Off-grid Application Using Dual Inverters (ACCB-L-L2)- - - - - - - - - - - - - 2–24
Figure 2-20 Wiring an On-grid Application Using a Single Inverter - - - - - - - - - - - - - - - - - - - - - - 2–25
Figure 2-21 Wiring an On-grid Application Using a Single Inverter (No Sub Panel) - - - - - - - - - - - 2–26
Figure 2-22 Wiring an On-grid Application Using a Single Inverter and TX Autotransformer

for a Step-Up Configuration for Utility Backup - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–27
Figure 2-23 Wiring an On-grid Application Using Dual Inverters (ACCB-L-L2) - - - - - - - - - - - - - 2–28
Figure 2-24 Accessory Wiring for Single-Inverter Configurations - - - - - - - - - - - - - - - - - - - - - - - 2–29
Figure 2-25 Accessory Wiring for Dual-Inverter Configurations - - - - - - - - - - - - - - - - - - - - - - - - 2–30
Figure 3-1 AC Bypass Switch Mode Summary - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–2
Figure 3-2 Normal Operation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–3
Figure 3-3 Bypass Operation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–3
Figure 3-4 AC Output OFF - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–4

973-0031-01-01 Rev A ix

x

Tables

Table 1-1 Operational and Environmental Specifications for the ACCB-L, ACCB-L-L1,

and ACCB-L-L2 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–4
Table 2-1 Torque Values for Wiring- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–15

973-0031-01-01 Rev A xi

xii

1

Introduction

Chapter 1, “Introduction” provides a basic introduction to the
design and purpose of the Sine Wave Plus Long AC Conduit
Box (ACCB-L).

The following topics are covered in this chapter.

For this topic: See:

“Introduction” page 1–2

“Specifications” page 1–4

“AC Bypass Switch Assembly” page 1–6

Introduction

Introduction

The Sine Wave Plus Long AC Conduit Box (ACCB-L and ACCB-L-L1) connects
to the AC side of a Sine Wave Plus inverter and accepts AC conduit runs. It is
designed to protect the wiring connections to the inverter and provides room for
up to nine additional AC disconnect breakers (Square D, Type QOU, DIN rail
mounted) to protect user-specified loads.

There are three models of ACCB-L:

• the ACCB-L Basic,

• the ACCB-L-L1, and

• the ACCB-L-L2.

The ACCB-L contains a ground bar only and provides no wiring.

The ACCB-L-L1 includes a ground wire attached to the ground bar, an AC bypass
switch (for a single AC input source) and input/output wiring attached to the AC
Input/output Terminals, a Neutral bar with neutral wire installed, and an isolated
H

OT bar.

The ACCB-L-L2 configuration is created by field-intalling an ACCB-L2-PCK
into an ACCB-L-L1. The ACCB-L2-PCK consists of another field-installable AC
Bypass Switch with wiring and an isolated AC Bus Bar.

Knockout panels for
additional Bypass
Switch Assembly
for additional circuit
breakers

This guide provides instructions for connecting the Long AC Conduit Box to the
inverter and other system components (i.e., utility panel, AC distribution panel,
grounding, and generator). It also provides instructions for installing additional
Square D™, Type QOU, DIN rail-mounted circuit breakers.

ACCB-L includes:

A

❐ Front Cover

B

❐ Blockoff Plates
❐ Ground Bar

B

A

Blockoff

Plates

B

Cover Base

C

D

C
D

❐ Din Rail

Figure 1-1

1–2 973-0031-01-01 Rev A

The Sine Wave Plus ACCB-L Basic

Introduction

ACCB-L-L1

G

J

I

F

K

E

H

ACCB-L-L2

L

N

M

K

ACCB-L-L1 includes the
components of the ACCB-L and
adds the following:

E

❐ One AC Bypass Switch Assembly

F

❐ AC Bus Bar (Neutral)

G

❐ AC Bus Bar (HOT L1)

H

❐ AC Input/output Terminal Block

I

❐ One length white NEUTRAL wire

J

❐ One length green GROUND wire

Figure 1-2

(including wiring)

The Sine Wave Plus Long AC Conduit Box (ACCB-L-L1, and ACCB-L-L2)

ACCB-L-L2 is created by installing
the ACCB-L2-PCK to the ACCB-L-L1.
ACCB-L2-PCK consists of the
following:

❐ Second AC Bypass Switch Assembly

K

Only (including wiring)

L

❐ AC Bus Bar (HOT L2)

M

❐ One length white NEUTRAL wire

N

❐ One length green GROUND wire

*This package is field-installed. The illustration above
shows where it would be located when installed in the
ACCB-L-L1.

973-0031-01-01 Rev A 1–3

Introduction

Specifications

The following table contains the specifications for the ACCB-L, the ACCB-L-L1,
and the ACCB-L-L2. The ACCB-L-L2 is not available pre-built from the factory,
but is created by field-installing an ACCB-L2-PCK into a ACCB-L-L1 model.

Table 1-1

Operational and Environmental Specifications for the ACCB-L, ACCB-L-L1, and ACCB-L-L2

ACCB-L ACCB-L-L1 ACCB-L-L2

Dimensions 33" (H) x 11" (W) x 8 3/4" (D)

(84 cm x 28 cm x 23 cm)

33" (H) x 11" (W) x 8 3/4" (D)
(84 cm x 28 cm x 23 cm)

This configuration is created
by field-installing an ACCB­L2-PCK into an ACCB-L­L1.

Weight 19 pounds (8.6 kg) 24 pounds (10.9 kg) ~2 pounds

Shipping Weight 23 pounds (10.4 kg) 27 pounds (12.2 kg) ~2 pounds

Operating Voltage 120/240 Vac,

60 Hz split-phase

Factory-installed
hardware

• Din Rail

• Ground Bar

120/240 Vac,
60 Hz split-phase

• Din Rail

• Ground Bar

• AC Bus Bar (Neutral)

• AC Bus Bar (HOT L1)

• AC Input/Output Terminals

• AC Bypass Breaker

120/240 Vac,
60 Hz split-phase

• Din Rail

• Ground Bar

• AC Bus Bar (Neutral)

• AC Bus Bar (HOT L1)

• AC Input/Output
Terminals

• AC Bypass Breaker

Factory-installed
wiring

None #6 THHN AWG, rated to

105 °C, stranded copper

• One - Ground Wire

• One - Neutral Wire

• One - H

• One - H

OT IN
OT OUT

#6 THHN AWG, rated to
105 °C, stranded copper

• One - Ground Wire

• One - Neutral Wire

• One - H

• One - H

a

OT IN
OT OUT

Field-installed
hardware

N/A ACCB-L2-PCK (needed to

create ACCB-L-L2)

• AC Bypass Breaker (Din
Rail-mountable) (w/H
and H

OT Out wiring)

• AC Bus Bar (H

OT In

OT L2)

AC Bypass Switch

Bypass None 60 Amp (SPST) 60 Amp (SPST)

Inverter

None 60 Amp (DPST) 60 Amp (DPST)

Input/Output

Rated Temperature 0 to 25 °C

(32 to 77 °F)

Storage
Temperature

-55 to +100 °C
(-67 to 212 °F)

Enclosure Indoor rated, White,

Powdercoat Finish

0 to 25 °C
(32 to 77 °F)

-55 to +100 °C
(-67 to 212 °F)

Indoor rated, White,
Powdercoat Finish

0 to 25 °C
(32 to 77 °F)

-55 to +100 °C
(-67 to 212 °F)

Indoor rated, White,
Powdercoat Finish

1–4 973-0031-01-01 Rev A

Specifications

Table 1-1

Ratings 120/240 Vac/60 hz., split-

Regulatory Certified by CSA to UL 1741-

Operational and Environmental Specifications for the ACCB-L, ACCB-L-L1, and ACCB-L-L2

ACCB-L ACCB-L-L1 ACCB-L-L2

phase, 60 Amp pass-thru

2001 (First Edition) and
CSA C22.2 No. 107.1-01

120/240 Vac/60 hz., split­phase, 60 Amp pass-thru

Certified by CSA to UL 1741­2001 (First Edition) and
CSA C22.2 No. 107.1-01

120/240 Vac/60 hz., split­phase, 60 Amp pass-thru

Certified by CSA to UL
1741-2001 (First Edition)
and CSA C22.2 No. 107.1-

a

01

a.The ACCB-L-L2 is not available pre-built from the factory, but is created by field-installing an ACCB-L2-PCK into a ACCB-L-L1
model.

Mounting Hole Size =

.265 x 1" (Obround)

Figure 1-3

Slot Size = .188"

(fits up to #8 screw)

ACCB-L Base

Outside

Inverter Side

Slot Size = .188"

(fits up to #8 screw)

Mounting Hole Size =

.265 x 1" (Obround)

ACCB-L Dimensions (not to scale)

973-0031-01-01 Rev A 1–5

Introduction

AC Bypass Switch Assembly

The AC bypass switch assembly in the ACCB-L-L1 is designed for 120 Vac
applications and comes with two 60-amp circuit breakers (one SPST and one
DPST). The breaker pair is equipped with a lockout rocker that allows only one
breaker to be ON at any given time.

The AC bypass switch allows the generator or grid to provide power to the
inverter loads in the event that the inverter is disabled for battery maintenance or
removed for service.

Factory-installed
AC Bypass Breaker

Figure 1-4

Bypass Switch Assembly in the ACCB-L-L1

A second AC bypass switch assembly (ACCB-L2-PCK) is available for dual­inverter installations (ACCB-L-L2 configuration). This field-installed, add-on
package includes pre-cut wires for wiring a second inverter in the lower position
and provides an additional Isolated Hot Bar for optional installation.

CAUTION: Equipment Damage

Although it is possible to use the second AC Bypass Switch for a second AC input
(i.e., generator and grid) to the same inverter, using the AC Bypass Switch for this
purpose is not recommended. Switching ON both Bypass switches can cause the two AC
sources to short each other out.

For more information see Chapter 3, “Operation” in this guide.

WARNING: Electrical Hazard

If the inverter is removed from service while the bypass is used, live circuits inside the
Long AC Conduit Box will not be guarded from accidental contact. Be sure to install the
Blockoff Plates to prevent accidental electrocution if the inverter is removed from the
system.

1–6 973-0031-01-01 Rev A