2.1THT-ZT neutral grounding resistor cabinet (NGR or NER) are used in medium-voltage AC distribution networks to limit the current .

2.2.Material:cold rolled steel ,steel, stainless steel ,aluminum, mild steel and galvanized steel plate ,etc.

2.3 parameters Description:

Standard: IEEE 32; IEC 60298

IEC 60071-1;

IEC 60072-2;

 Method of cooling: Naturally air cooled

Installation: Outdoor installation or outdoor

Rated system voltage:66KV 35KV 10KV

Rated phase voltage- rated voltage earthing resistor:

Power Range: 1-5000A

Voltage range: 220V-110KV

Power Factor Range: 0.5R-1000R

 Dielectric Strength: AC2.5KV-260KV/1min 50H (zoptional)

 IP Class: IP00-IP56H (optional)

 Rated Temperature Rise: 760°C

Temperture drift: 200ppm/°C

1.    Working conditions

maximal/minimal ambient air temperature: 40℃/-25 ℃

Maximal/minimal barometer pressure: 1030 bar/940 ba

Maximal relative humidity: 100%

Elevation: ≤1000 m

Wind speed, maximal during the year: 34m/s

Isokeraunic  level:

Seizmic conditions: Nil

Minimal technical requirements

Introduction  of compact transformer cubicle-type substation

 Cabinet material Stainless steel plate, aluminium alloy, cold-rolled steel, composite color plate, Glass fiber reinforced cement board and etc.

Resistor will be complete with lifting eye, the access holes, grounding connections, links and bushings suitable for phase voltage systems and fasteners with screws or clasps.

  Style: Popular type, villa type, compact type and other various types.

              

         

4.Packing Detail:

1. As customer's requirement.

2.Wood pallet can be filled the following container: 20 plain container:5.69mX2.13mX2.18m,Gross weight 17.5 tons, Cubage 24-26 square meters; 40 plain container:11.8mX2.13mX2.18m,Gross weight 22 tons, Cubage 54 square meters; 40 high container:11.8mX2.13mX2.72m.Gross weight 22 tons, Cubage 68 square meters; 45 high container:13.58mX2.34mX2.71m,Gross weight 29 tons, Cubage 86 square meters.