Enclosure
The stabilisers are enclosed in a welded sheet steel tank; all covers are lipped to prevent any ingress of moisture and are retained by stainless steel bolts. Supplied complete with lifting lugs, and pole clamp (if applicable), all finished in Dark Admiralty Grey (RAL 7031). The enclosures are fitted with the following: Oil sight gauge, free air breather tube. Porcelain bushings and earth terminal.

Insulating Oil
An uninhibited transformer oil is used, conforming to IEC 296(’82) class 1 & 2 and BS148(’84) class 1 & 2 specification.

Output Voltage
Units are manufactured for output voltages up to 270V single phase and up to 470V three phase.

Accuracy
+/- 2 % or +/- 5% (as required). The accuracy is maintained over the specified input voltage range from zero to full load irrespective of power factor, frequency variations, and ambient temperature variations. For three-phase units the accuracy is maintained irrespective of input voltage balance and output load balance.