2500W28R Low- Inductance Chassis Mount Dynamic Inverter Braking Resistors
Structure :
1.The resistors core components are made of insulating and high-temperature resistant materials as the resistors framework,evenly wound with high-quality alloy wires.
2.Metal aluminum shell potted with high insulation non-combustible electronic paste,so that the aluminum shell and the resistance core components are closely combined into a solid entity,not affected by external air,vibration and dust,high stability and thermal conductivity.
4.An aluminum encased consists of an alloy metal coil-type resistance element assembled into an aluminum enclosure.
5.Following high-temperature anodization, the enclosure is filled with a special
non-flammable cement paste and after hardening. Insulation is applied through a high temperature process.
6.Since this component is embedded in the heat-proof cement, it is not affected by external mechanical force, and dusty environments.
Features
1.Internal wire wound resistor is protected by external Aluminum Case from external mechanical force,humidity and dusty.
2.Suitable for industrial machinery and equipment,electric power distribution.
3.Durable and can withstand stronger vibration.
4. Low temperature coefficient and better heat conduction.
5. Support Low Inductance requirement.
6. Precision Resistance Tolerance +/-0.1% +/-0.5% +/-1% +/-5% +/-10% .
Specification
| Performance Charactertics | |
| Test | Conditions of Test | Testing Results |
| Resistance Tolerance | Testing Voltage ≤3V,Ambient Temperature 25℃ | B---D---F---G---J--K |
| Temperature Coefficients | R0:Room Temperature(T0)Resistance Value
R1:Room Temperature T0+100℃(T1)Resistance Value | ±100～±250PPM/℃ |
| Rated Load | 40℃,rated voltage,1hour | △R≤±(3％+0.1Ω) |
| Short Time Overload | 5 times rated power for 10s;10 times rated power for 5s;25 times rated power for 1s | △R≤±(2％+0.1Ω) |
| Dielectric Withstand Voltage | 2 times Rated Power Voltage +1kv AC 60s (with grounding), leakage current 2.5mA ;
2 times Rated Power Voltage +2kv AC 60s (with grounding), leakage current 2.5mA ; | △R≤±(0.1％+0.05Ω) |
| Insulation Resistance | 1000V DC | 50M-1000MΩ1Min |
| Terminal Tensile Strength | wire diameter ≤1.5 with 20N,wire diameter ≥1.5 with 40N,
terminal tension 20N
copper end /stainless steel end,40N | No off |
| Vibration resistance | 1.5mm,10-55-10Hz,each 2hours | No damage,No off |
| Load Life | at rated voltage,90 min "On",30 min "Off" ,total 500hours | △R≤±(3％+0.1Ω) |
| Thermal Shock | At 30℃,30min,-55℃,15min | △R≤±(0.5％+0.1Ω) |
| Humidity Resistance | Temp.:40±2℃ ,Humidity: 90％-95％.240hours | △R≤±(3％+0.1Ω) |
| Low Temperature Resistance Testing | store at -65℃±3℃ for 2H | △R≤±(1%+0.1Ω) |
| High Temperature Resistance Testing | store at 70 ℃± 2 ℃ for 16h, connect the rated voltage DC circuit for 1s | △R≤±(1%+0.1Ω) |
| Non-flammability | 10 times rated power, power on for 5s | without combustion |
Applications
Widely used in frequency converter,elevator,hoisting,ship,electric power,welding,power supply,military industry,aviation,wind power generation,solar power generation,automation equipment,railway system and other industries,and can be made into load banks according to the customers requests.
Products Image
Product Tags:
|
|
2500W28R Low- Inductance Dynamic Braking Resistor Inverter Chassis Mount Images
|
