In power system of 6-66KV, when capacitive current associated with
single-phase ground fault excess 10A (It is 30A in 6-10KV cable
circuit system), arc-supression coil device should be adopted to
prevent damages. The device is designed based on eletrical standard
of DL/T620-1997 (standard of overvoltage protection and insulation
co-ordination of AC electrical equipments)
SPECIFICATIONS (Order Note)
1.Abient Temp. of operation is between -20 centigrade and +40
2.Relative humidity of Air is or less than 80%(+20 centigrade)
3.Altitude does not excess 2000m(If excess, pls indicate in order)
4.There is no corrosive gas around the site, so is conductive dust
6.There is no severe shocked movement around the site.
1.MRD-XHZ micro-computer controller and PK screen.
3.Regulated load arc supression coil
4.MRD damping resistor cabinet as well current/voltage transformer.
with IEEE-32. Routine tests performed on each Neutral Grounding
Resistor are measurement of resistance, high voltage power
frequency, insulation measurement, aspect verification, dimensional
control. Mingrui’s internal quality system has been developed and
certified under ISO 9001 quality system
Standard unit includes the stainless steel resistor assembly plus
all the required insulators, internal connections and hardware
installed in a standard safety enclosure. Neutral Grounding
Resistor units are completely assembled, prewired, and tested at
our facility. For shipping all units are crated for added
protection and ease of handling.
•Stainless steel, cold rolled plate construction. Custom paint
finish is available.
• Top or side mounted entrance bushing(s).
• Screened covers for indoor applications.
• Support stands for elevating the enclosure above ground.
Current or potential transformers mounted and prewired at our
ON or OFF Load disconnecting switches