Datasheet > GR7H-3003T

GR7H-3003T

更新时间： 2024-11-21 00:59:19

品牌	Logo	应用领域
其他 - ETC		/
页数	文件大小	规格书
3页	120K
描述
NEUTRAL GROUNDING RESISTORS LOAD BANKS

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GR7H-3003T 数据手册

Tel : 82-32-817-4325

Fax : 82-32-817-4329

Resistors And

Resistive Applications

NEUTRAL GROUNDING RESISTORS LOAD BANKS

INTRODUCTION

RARA Neutral Grounding Resistors are designed to provide added

safety to industrial distribution systems by limiting ground fault

current to reasonable levels. In a typical grounded three phase

system, the NGR is connected directly to the earth ground. This can

cause high ground fault current (typically 10,000 to 20,000 amps)

and excessive damage to transformers, generators, motors, wiring,

and associated equipment. Installing a RARA Neutral Grounding

Resistor between neutral and ground limits fault current to safe

levels while still allowing sufficient current flow to operate fault

clearing relays

- custom designed for your particular system

- durable, all stainless steel resistor elements

- elements are well insulated from ground for added safety

- corrosion resistant enclosures

- several stages of assembly depending on shipping needs

Product

Notes

Our NGR elements fall into three categories: Strip, edge wound and wire wound types. The dimensions of these

range from thicknesses of 0.6-2.5mm and widths from 4-100mm. The element type depends on the power of the

NGR. Our enclosuresv have voltage ratings from 0.2KV to 72KV and meet IEEE32. We can manufacturer NGRs

with IP ratings up to IP54 and NEMA ratings up to NEMA3S.

Characteristics of Metal Resistive Elements

- reliable electrical characteristics

- resistor contact points are spot or argon-welded eliminating contact defects

- high resistance to mechanical vibration

- advanced cutting and trimming technology ensures low resistance tolerance

- easy maintenance and verification

Minimum Information Needed for Model Selection

- voltage rating [KV/R3]

- current rating [A]

- time rating [sec.]

- resistance [ohms]

- indoor/outdoor

- ambient environmental conditions

Website : http://www.raraohm.com Email : sg@raraohm.com

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