Electrical Specifications

Adjustable Disconnect Settings

Islanding protection is an essential safety feature that ensures no person working on the grid is harmed by a distributed energy source. Default software settings are programmed into each GT Inverter at the factory to ensure it does not island according to relevant safety regulations (VDE 0126, RD 1663/2000).

In some instances it may be desirable from both a utility and customer point of view to adjust these default settings. For example, the GT Inverter may experience “nuisance trips” (taking the inverter “offline”) if the grid is weak and the voltage falls outside the allowable range specified in the regulations. It may be difficult for a utility to upgrade the grid to eliminate this problem. With permission from the utility, the factory settings may be changed to allow the GT inverter to operate over a wider grid voltage range.

These settings are password protected and should only be changed by qualified service personnel, using a special software application provided by Xantrex. Changing any values may compromise compliance with safety regulations. Do not do so without first consulting with the utility and agreeing on acceptable settings.

The default values of these settings differ from the utility specifications on page A–2. These differences take into account the accuracy ranges listed in the table below, and are intended to ensure that utility specifications are always met.

Note: Disconnect settings on German models are not adjustable.

 

Default Values

 

 

 

 

 

 

 

230 Vac/

Adjustment

 

Setting

50 Hz (SP)

Range

Accuracy

 

 

 

 

AC Low Voltage

198 Vac

180–269 Vac

+/– 3 Vac

 

 

AC High Voltage

250 Vac

 

 

 

 

 

 

AC Low Frequency

49.1 Hz

46.0–62.0 Hz

+/– 0.1 Hz

 

 

AC High Frequency

50.9 Hz

 

 

 

 

 

 

Reconnect Delay

180 sec.

0–600 sec.

+/– 5 sec.

 

 

 

 

975-0253-01-01

A–3