English

Fixed Competitive Price Aluminum Rust Resistance - Crowbar/Chopper Resistor – Wepower

Fixed Competitive Price Aluminum Rust Resistance - Crowbar/Chopper Resistor – Wepower Featured Image
  • Fixed Competitive Price Aluminum Rust Resistance - Crowbar/Chopper Resistor – Wepower
  • Fixed Competitive Price Aluminum Rust Resistance - Crowbar/Chopper Resistor – Wepower
  • Fixed Competitive Price Aluminum Rust Resistance - Crowbar/Chopper Resistor – Wepower

Short Description:


Product Detail

Product Tags

Related Video

Feedback (2)

We can easily usually fulfill our respected customers with our very good top quality, very good price tag and excellent support due to we have been more expert and much more hard-working and do it in cost-effective way for Aluminum Wire Vs Copper Resistance, Virtual Ground With Resistors, Types Of Neutral Grounding Resistors, Created solutions with brand price. We attend seriously to produce and behave with integrity, and because of the favor of clients in your own home and overseas in the xxx industry.
Fixed Competitive Price Aluminum Rust Resistance - Crowbar/Chopper Resistor – Wepower Detail:

█ Application

Crowbar resistor is mainly used in low voltage ride through technology of wind power inverter. It is used at the rotor side of wind turbine generator to bypass the rotor side converter. In case of low voltage disturbance in the power grid, the DC bus voltage and rotor current shall be prevented from being too high. It mainly works in fault state to damp stator flux linkage. Crowbar resistors can dissipate huge amounts of energy instantaneously.

It is mainly used in the frequency conversion / converter system of doubly fed variable speed constant frequency generator units to improve the low voltage ride through capability of generator units, which is limited by the power grid
Large current impact caused by voltage drop protects excitation converter and limits rotor winding over voltage.

█ Feature：

The resistance material is imported alloy steel, which can absorb large energy impact in a short time, and can meet different power requirements.

█ structures：

Mica sandwich structure, traditional metal carrier grid structure and block carrier structure:
1. mica sandwich structure, with small volume, low cost and large heat capacity, is suitable for absorbing large energy in a short time and for single impact at long intervals (once a week).
2. with the traditional metal grid structure, the product has relatively moderate volume, relatively moderate cost and good heat dissipation performance. It is suitable for multiple impacts in a short time (once every 30 minutes). It can be used in crowbar resistor, chopper resistor and braking resistor circuits.
3. block carrier structure, the product has strong impact resistance and good heat dissipation performance. High structural strength and moderate price. Suitable for short-time multiple impact. It can be applied to crowbar resistor, chopper resistor, braking resistor and other circuits.

█ Life Time of Crowbar Resistor

200J 1 times/second  
220KJ 1 times/30mins 35000 times（20 years of life）
640KJ 1 times/week 1000 times（20 years of life）
1360KJ 1 times/month 260 times（20 years of life）
Take 1.5MW windmill generator as an example, environment temperature ≤ 60℃

█ Resistor Material Comparison

 Material

（g/mm3）

（Ω·mm2/m）

J/(g·K)

W/(m·K)

ppm/℃

SUS304

7.9

0.72

0.5

13.2

≤1400

SUS316

7.93

0.78

0.45

13.23

≤900

SUS310S

7.98

0.88

0.46

13.2

≤600

Cr20Ni80

8.4

1.09

0.441

16

≤100

█ Selection Table

Energy

Resistance

Time

Dimension（mm）

（L）mm

(W)mm

(H)mm

50KJ

3R

30mS

420

160

95

200KJ

2R

3.8S

285

178

150

500KJ

3.3R

3.8S

670

150

150

1.0MJ

0.36R

0.1S

395

190

153

1.5MJ

0.45R

3S

520

292

100

2.0MJ

0.4R

30mS

868

175

130

2.0MJ

0.5R

30mS

943

195

135

2.2MJ

0.7R

1S

446

240

153

2.5MJ

0.95R

3S

597

400

200

3.0MJ

0.7R

1S

432

240

153

Note: For other technical parameters & requirements， please contact with our company’s business man.

Product detail pictures:

Fixed Competitive Price Aluminum Rust Resistance - Crowbar/Chopper Resistor – Wepower detail pictures

Fixed Competitive Price Aluminum Rust Resistance - Crowbar/Chopper Resistor – Wepower detail pictures

Fixed Competitive Price Aluminum Rust Resistance - Crowbar/Chopper Resistor – Wepower detail pictures

Related Product Guide:
Our enterprise since its inception, constantly regards product good quality as organization life, constantly improve production technology, strengthen merchandise high quality and continuously strengthen enterprise total good quality administration, in strict accordance with all the national standard ISO 9001:2000 for Fixed Competitive Price Aluminum Rust Resistance - Crowbar/Chopper Resistor – Wepower , The product will supply to all over the world, such as: Slovakia, Kenya, Argentina, Qualified R&D engineer will be there for your consultation service and we will try our best to meet your requirements. So please feel free to contact us for inquiries. You'll be able to send us emails or call us for small business. Also you are able to come to our business by yourself to get further knowing of us. And we will surely give you the best quotation and after-sale service. We're ready to build stable and friendly relations with our merchants. To achieve mutual success, we will make our best efforts to build a solid co-operation and transparent communication work with our companions. Above all, we are here to welcome your inquiries for any of our goods and service.
    • A good manufacturers, we have cooperated twice, good quality and good service attitude.
    5 Stars By Fay from Hungary - 2017.03.28 12:22
    We have been cooperated with this company for many years, the company always ensure timely delivery ,good quality and correct number, we are good partners.
    5 Stars By Amy from Azerbaijan - 2018.02.04 14:13

    Products categories

    Hit enter to search or ESC to close