Xantrex Technology ACCB-L, ACCB-L-L1 Dual Inverters: 240 Vac Loads

Operation

3–4 973-0031-01-01 Rev A

AC Input/Output Off

No power to the load or inverter (Figure 3-4).

In this configuration, power from both the external sources of AC and the inverter

is removed from the loads. This allows the inverter that is connected to the AC

Bypass breaker to be removed for service.

‘

Dual Inverters: 240 Vac Loads

Figure 3-4

AC Output OFF

WARNING: Fire Hazard

In a series-stacked, inverter installation (120/240 Vac) with an AC Bypass switch for each

inverter, both AC Bypass switches must be in the same position.

If the AC Bypass switches are not in the same position, the resulting AC output of the two

AC Bypass switches may not be 180° out-of-phase from each other. This can result in

excess current on the neutral wire creating a potential fire hazard.

This can also result in less than 240 Vac output. Loads requiring 240 Vac will not run.

Some 240 Vac equipment may also be damaged if one AC “leg” is lost.

OFF

ON

6060

OFF

ON

BOTH OFF TO DISCONNECT AC OUTPUT

INVERTER

Bypa ss 1

on to bypass

INVERTER

DISCONNECT 1

on for normal operation

AC Input from

Grid or Gen

Both external AC source and

the Inverter are OFF

AC Output to Loads

Contents

Main Page Page Page About This Guide Purpose Scope Audience Organization Conventions Used The following conventions are used in this guide. Abbreviations and Acronyms Related Information WARNING Important Safety Instructions WARNING Page Contents Important Safety Instructions 1 2 Introduction Page Figures Page Page Page 1 Introduction Page Specifications Operational and Environmental Specifications for the ACCB-L, ACCB-L-L1, and ACCB-L-L2 Figure 1-3 Table 1-1 ACCB-L Dimensions (not to scale) Operational and Environmental Specifications for the ACCB-L, ACCB-L-L1, and ACCB-L-L2 AC Bypass Switch Assembly CAUTION: Equipment Damage WARNING: Electrical Hazard Blockoff Plates Page 2 Preparing for the Installation Code Compliance Installation Tools and Materials Configuration Planning Off-Grid Configurations On-Grid Configurations Pre-Installation Location WARNING ELECT RICAL SHO CK HAZARD Ventilation Requirements Removing and Replacing the Cover Installing or Removing the Blockoff Plates Knockout Preparation Pre-Installation 973-0031-01-01 Rev A 29 Figure 2-6 Knockouts Locations Installing Additional Breakers Mounting Mounting on the Xantrex Back Plate (XBP) Page Mounting on Plywood Wiring - General Accessing the AC Input/Output Terminal Block in the ACCB-L-L1 WARNING: Fire Hazard Wire Sizes and Disconnect Requirements CAUTION: Equipment Damage Installation 216 973-0031-01-01 Rev A Figure 2-11 ACCB-L Approved Internal Components Wiring - General 973-0031-01-01 Rev A 217 Figure 2-12 ACCB-L-L1 Internal Components (Factory installed) Installation 218 973-0031-01-01 Rev A Figure 2-13 ACCB-L-L1 Internal Components with the Optional ACCB-L2-PKG Installed Wiring for Off-Grid Applications Single Inverter Configurations (120 Vac) Page Page Page Page Page Wiring for On-Grid Applications Single Inverter Configurations (120 Vac) Page Page Page Additional Accessory Wiring Page 3 The AC Bypass Switch Operating the AC Bypass Switch Normal Operation Bypass Operation AC Input/Output Off Dual Inverters: 240 Vac Loads Figure 3-4 AC Output OFF WARNING: Fire Hazard Warranty and Return Information Warr anty What does this warranty cover? What will Xantrex do? How do you get service? Disclaimer Product Exclusions Warning: Limitations On Use Return Material Authorization Policy Return Procedure If you are returning a product from outside of the USA or Canada If you are returning a product to a Xantrex Authorized Service Center (ASC) A Xantrex return Out of Warranty Service Information About Your System Index A B C E