Henan Energy Electric Equipment Co., Ltd. was established in 2011 and is an excellent and reliable power equipment manufacturer in China. The company mainly develops and produces oil-immersed transformers, dry-type transformers, box-type substations, high-voltage switches, and medium and low voltage complete sets of equipment. The equipment put into production and operation of the project advocates energy saving, intelligence, informatization, and mechanization. The company has established the Henan Triangle Energy-saving Transformer Engineering Technology Research Center, with 71 utility model patents and 15 invention patents. With years of accumulation in the transformer industry and strong technological innovation capabilities, HZEC products are sold to the Middle East, North America, South America, Europe, Southeast Asia, Africa, and other regions, covering more than 40 countries.
Product Description
The wire-wound high-power resistor uses high-frequency porcelain tubes instead of earthenware tubes. High-frequency porcelain tubes are durable, high-power, high-heat dissipation, and small in size. The surface coating uses nano-organic silicon coating, which is green, environmentally friendly, non-toxic and odorless, and ensures stable power, good heat dissipation and safety. All hardware accessories are thickened, widened, and installed firmly and safely.
Product Parameters
| Model |
Rated Power (W) |
Resistance Range(Ω) |
Resistance Tolerance(%) |
Max. Working Voltage(V) |
Withstand Voltage(V) |
Temperature Co-efficient (PPM/ºC) |
| RXBW |
300 |
1~20 |
J(±5%)
K(±10%) |
√PR |
1500 |
±250 |
Main Features
1. Resistant to large current shocks, good power load capacity, and wide power range.
2. Fully welded structure, the product has high reliability.
3. The vertical corrugation on the surface is conducive to heat dissipation and reduces parasitic inductance, and a high flame retardant coating is used to effectively protect the resistance wire from oxidation and extend its service life.
Outline Dimension
Model
|
Rated power (W)
|
Outline dimension |
| L1±2 |
L2±5 |
L3±3 |
D±2 |
B±1 |
S±2 |
H±1 |
H1±3 |
N±2 |
Φd±1 |
T±0.5 |
| RXBW |
300 |
256 |
278 |
300 |
40 |
8 |
40 |
41 |
82 |
12 |
5.5 |
2.0 |
Performance Indicate
| Item |
Performance requirement |
Test method |
| Solderability |
Wetting area ≥95% |
Solder bath method 235±5ºC, 2s |
| Terminal strength |
△R≤±(1%R+0.05Ω) |
20N,30s |
| Constant humidity and heat |
△R≤±(2%R+0.05Ω) |
40±2ºC,93±3RH,1000h |
| Vibration |
△R≤±(1%R+0.05Ω) |
10~500Hz,0.75mmm or 98m/s2,6h |
| Collision |
△R≤±(1%R+0.05Ω) |
Frequency 40~80 times/min 2000 times |
| Surface temperature rise |
≤275ºC |
Apply rated power load PR |
| Room temperature durability |
△R≤±(5%R+0.05Ω) |
Room temperature PR,1000h |
| Overload |
△R≤±(2%R+0.05Ω) |
10PR,5s |
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