Figure 18 Ac Sources - OutBack Power Radian GS8048A Installation Manual

Radian series inverter/charger

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Table Of Contents

Table of Contents

Installation

AC Sources

The inverter's transfer relay is normally set to provide inverter power to the output.

The conditions for AC acceptance are defined by the inverter's programmed settings and AC input

mode. The relay will switch to transfer the AC source power to the output when the AC acceptance

conditions are met.

The Radian inverter has connections for two AC sources, GEN (generator) and GRID, for ease of

installation. Each source is transferred with a separate relay. However, internally it can only connect

to one AC source at a time. It cannot use both utility grid and generator power at the same time. If

presented with two sources of power, the default setting is to accept the source connected to the

GRID terminals. The source priority can be changed using the system display.

NOTE: The terminals are labeled due to common conventions, not inverter requirements. The GEN

terminals can accept grid power if necessary. The opposite is also true. Each input can accept any AC

source as long as it meets the requirements of the Radian and the selected input mode, with the

following exception.

NOTE: If an AC source is present on the priority input, the second input cannot accept another source

for any reason. This is true even if the inverter has not accepted the priority source. The behavior is

the same whether the first source was rejected for quality issues or because of programmed settings.

In Figure 18, the arrow between the output neutral and ground wires indicates that these two wires

have been bonded together, usually at the main electrical panel. Only one bond should be made

between neutral and ground at any time. See pages 19 and 22. If a generator is present in a

permanent installation, the generator's neutral and ground should be isolated.

IMPORTANT:

The generator must be connected to the GEN terminals if using either the

MATE3's Advanced Generator Start (AGS) function or the Radian's GenAlert

auxiliary function. If the input priority is set to GRID and the GRID terminals are

energized, an automatically controlled generator will shut down. This prevents an

automatic generator from working correctly when using the GRID terminals.