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| Product Name: |
High resistance neutral grounding resistor
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| Supply Ability: |
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| Related proudcts |
grounding resistor, |
| Specifications |
generator neutral protection device |
| Price Term: |
FOB |
| Port of loading: |
Tianjin |
| Minimum Order |
1set |
| Unit Price: |
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Brief Introduction to Product
1.1 Scope of Application
MRD-FD type neutral ground resistor cabinet is complete equipment specially used by generators in power plant which adopts high-resistance grounding for neutral. The voltage grade for generator mainly ranges from 6kv to 20kv. When one point of the stator grounds, the devices is able to limit the grounding current at a reasonable value and effectively restraint arc flash transient overvoltage associated with single-phase grounding.
1.2 Operation Environment
1. Applies to indoors.
2. Ambient temperature: between -40 and +40 centigrade
3. The altitude shall not exceed 3000m.
4. Relative humidity be or lower than 95% (25centigrade)
5. Power grid frequency: 58-62Hz (60Hz System), 48-52Hz (50Hz System)
6. The air at the installation site shall be free from chemical corrosion, vapor or explosive dust.
2. Product Model Description
According to user’s requirement, service of calculation resistance value and ***ermining model No. is free.
2.1 Parameters of Grounding Transformer
Insulation class: H
Temperature rise: �00K
Cooling: AN
Protection Level: for paper-insulated dry type grounding transformer, the PI is divided into IP00 (no enclosure), IP20, and IP23 (with enclosure).
Insulation level, impedance voltage on-load loss and no-load loss are according to relevant national standards.
Insulation resistance testing: high voltage-low voltage and to earth �00MΩ, and low voltage-earth�00MΩ.
3. Structure of Complete Device
3.1 Composed Elements
Dry type single-phase grounding transformer, resistor, disconnector, surge arrestor and so on.
CT is also equipped in the enclosure which measures neutral current and outputs analog quantity.
3.2 Recommended Technical Parameters of MRD-FD Type Generator Neutral Resistor
If the parameters of project is not within above table or need more accurate data, we could calculate according to actual project.
In the table primary side voltages of grounding transformer wit |
| Company: |
Baoding Mingrui Optoelectronics Technology Co.,Ltd
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| Contact: |
Ms. Anastasia Shi |
| Address: |
No,118 West Fuxing Road |
| Postcode: |
071051 |
| Tel: |
8618132229565 |
| Fax: |
863123138586 |
| E-mail: |
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