High Power Ceramic Tube Wirewound Resistor For Aging Testing
Structure :
1.The high temperature resistance ceramic tube is used as the
resistance matrix,is wound with chrominum alloy wire,then coated
with high temperature & non-flammable resin for protection to let
resistors with better appearance and heat dissipation effect,after
natural drying,baking at different temperatures before assembly.
2.The High Power Wirewound Resistor Series includes
DDR&DQR(wave-shaped alloy ribbon)&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.
3.Working voltage and Nominal resistance value are related to Ohm’s
law.
Features:
1.In different applications,called ceramic wirewound
resistors,ceramic tuberesistors,high power resistors,ripple
resistors,braking resistors,charge resistor,discharge
resistors,dump load resistors,current limiting resistors,aging
resistors or load resistors,ect.
2.High power,shock resistance,fast heat dissipation,high
stability,long life & fast delivery .
3.Taps/Termianls leading out for bolts/wire connection,solder,screw
or fast-on terminals.
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 ,
industrial machinery,electric power distribution,instruments,
automation control installations,lift trucks,overhead cranes,
elevators,arc and spot welders,battery chargers,machine
tools,conveyors,and UPS systems.
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