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R7H-2001T PDF预览

R7H-2001T

更新时间: 2024-11-06 01:07:39
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

R7H-2001T 数据手册

 浏览型号R7H-2001T的Datasheet PDF文件第2页浏览型号R7H-2001T的Datasheet PDF文件第3页 
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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