БУАВР.ЭА.Т

БУАВР.ЭА.Т automatic transfer switch controller

for an ATS with two incomers and one load, in the transformer substation version, one incomer being a diesel generator

Purpose:

• The БУАВР controls the automatic transfer from the main supply to the standby supply and back, on impermissible phase voltage deviations, phase imbalance or asymmetry, a change in phase sequence, or the loss of one or more phases in the "main" or "standby" network.

• The БУАВР.ЭА.Т variant is intended to operate as part of an ATS at transformer substations. What distinguishes these БУАВР variants is the increased surge withstand of the measuring inputs and the separation of the monitoring circuits from the supply circuits.
• The БУАВР can be used in distribution networks as part of:
  - automatic transfer switching (ATS);
  - emergency transfer switching.
• The БУАВР monitors incomer status, controls magnetic contactors and motor-operated circuit breakers, indicates input and output status, and starts, stops and automatically restarts the generator set.
• The БУАВР is built to climatic category У, placement category 2 per ДСТУ ГОСТ 15150-69, and is designed to operate at temperatures from -25°C to +55°C, relative humidity up to 80% and atmospheric pressure from 650 to 800 mm Hg.
• The БУАВР is intended for operation in a non-explosive atmosphere, free of gases and vapours in concentrations that attack metal and insulation, and free of saturated water vapour and conductive dust.
• Resistance to external mechanical factors — per ДСТУ ГОСТ 17516.1, group М6
• Permissible vibration: 1 to 35 Hz at an acceleration of no more than 4 m/s².
• The БУАВР.X.X.T is powered from an additional supply source.

Operating manual for the БУАВР.ЭА.Т automatic transfer switch controller