I. Overview:

All live parts of the GPR ring main unit are sealed in a metal gas box with nitrogen (N.) as the insulating medium, without insulation partitions or insulation aging and failure hazards. The design concept of the lowest functional pressure as low as zero gauge pressure ensures the rated insulation level of the equipment, and the gas box is reliably grounded to ensure that operators will not touch live parts; The cable room cover and switch status have reliable mechanical interlocking.

II. Performance characteristics

--The GPR ring main unit meets the technical requirements for the primary and secondary integration of ring main units.

--Capable of setting telemetry dead zone range, remote and local telemetry anti shake coefficient

--Equipped with short-circuit fault detection and discrimination functions, as well as grounding fault detection functions;

--Capable of collecting analog and status signals of switches locally, as well as controlling switch opening and closing functions, with remote transmission and control functions for measurement data and status data, and can flexibly expand the number of monitoring switches;

--Equipped with fault recording function, equipped with an independent distribution line loss acquisition module to achieve metering function, calculate the forward and reverse active power and reactive power of each interval, as well as the power factor of the four quadrants;

--Measurement data freezing function, including daily freezing and freezing data when power direction changes;

--Support remote retrieval of historical data and upload it to the main distribution network station in file format.