Shenzhen Zenithsun Electronics Tech.CO.,LTD
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High Power WireWound Fixed Resistors With Collective Bracket
Structure :
1.The High Power Wirewound Resistor Series includes DDR and DQR(wave-shaped alloy ribbon) and DSR(variable wirewound ).They are called ceramic wirewound resistor,ceramic tube resistor,high power resistor,waved resistor,braking resistor,charge resistor,discharge resistor,dump load resistor,current limiting resistor,aging resistor or load resistor,ect.
2.Several resistors body with collective mounting brackets
3.Single unit with multi-resistance/ Multi-terminals also available;
4.Non-inductive & variable type on requests;
5.Working voltage and Nominal resistance value are related to Ohm’s law.
6.DR series is one core products of ZENITHSUN,owning characters of high power,resistance to shock ,good heat dissipation,high stability,high over load,long life, fast delivery.
Features:
1.These resistors are suitable as loading resistor,braking resistor,capacitor discharge,resistive load simulation,machinery,machinery and equipment higher power application.
2.Mounting fixture is available.
3.Resistance adjustable version is available:DSR series .
4.Resistance box and load bank available with power up to 2000kW.
5.Support precision resistance tolerance requirement.
Specification
| Performance Charactertics | ||
| Test | Conditions of Test | Testing Results |
| Resistance Tolerance | Testing Voltage ≤3V,Ambient Temperature 25℃ | B---D---F---G---J--K |
| Rated Load | 40℃,rated voltage,1hour | △R≤±(3％+0.1Ω) |
| Short Time Overload | 5 times rated power for 10s | △R≤±(0.2％+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 | 500V DC | ≥10GΩ1Min |
| Terminal Tensile Strength | 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) |
| 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,generator test load,automation equipment,railway system and other industries .
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