Ceramic Cement Wire Wound Resistor Pre Charge For Voltage Equalizing
Brand Name:ZENITHSUN
Certification:RoHs
Model Number:SQF
Minimum Order Quantity:10pcs
Delivery Time:7~10 working days
Payment Terms:L/C, T/T
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Location:
Shenzhen Guangdong China
Address:
Yikang business building 11128#, Huarong Road 33#, Dalang Street, Longhua District, Shenzhen 518109, Guangdong, China
Supplier`s last login times:
within 28 hours
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Product Details
Charging Ceramic Cement Wirewound Resistors For Voltage Equalizing
Structure:
1.ZENITHSUN Charging resistor is ceramic rod with the resistance
winding wire (the voltage-equalizing resistor is made of metal
oxide film resistor core,instead of wire wound resistor core),put
the wire wound resistance core into different sizes and shapes
ceramic shells,sealed with special incombustible heat-resistant
cement electronic filler,by natural drying in the shade and baking
at high temperature.
2.For high resistance value,wires are replaced by metal oxide
films.
3.Charging resistor is designed to charge the energy storage
capacitor slowly when the frequency converter is just powered
on,which is also called buffer resistor.
4.Voltage-equalizing resistor with leading out in the form of
circular end or a square end.
5.The main function of the voltage-equalizing resistor is to use
the voltage dividing principle to ensure that the voltage on each
capacitor is equal.
6.Power Range: 5W-25W for voltage-equalizing resistors,20W-80W for
charging resistors;
7.Strong Impact Resistance,High Insulation,Special for frequency
converter server.
Features:
1.Small size,resistant to vibration,humidity and heat,good
dissipation,low noise and no annual shift in resistance value,low
price
2.ZENITHSUN is equipped to design and produce custom components to
meet many design and reliability demands.
3.Contact us with your specific needs.
4.Conforms to the ROHS standard and the LEAD-FREE non-lead
standard.
Specification:
| Performance Charactertics | ||
| Test | Conditions of Test | Testing Results |
| Resistance Tolerance | Testing Voltage ≤3V,Ambient Temperature 25℃ | ±1％,±5％,±10％ |
| Temperature Coefficients | R0:Room Temperature(T0)Resistance Value R1:Room Temperature T0+100℃(T1)Resistance Value | ±300PPM/℃ Max |
| Insulation Voltage | 1KV DC 60s | No flashover, no damage |
| Insulation Resistance | 500V DC | 1000MΩ1Min |
| Short Time Overload | 10 times rated power for 5s(KN);2.5 rated power for 5s(MO) | △R≤±(2％+0.1Ω) |
| Humidity Resistance | Temp.:40±2℃ ,Humidity: 90％-95％.1000hours | △R≤±(2％+0.1Ω) |
| Load Life | Temp.:40±2℃ ,Humidity: 90％-95％,rated voltage 1.5hours 30 min "Off" ,continuous 1000hours | △R≤±(5％+0.1Ω) |
| Heat Resistance | Tin Temp.:350±10℃,time::3±0.5s,immersion depth:distance from component body 2±0.5mm | △R≤±(1％+0.05Ω) |
| Solderability | Tin Temp.:235±5℃,time::3±0.5s | Solder area≥95% |
| Non-flammability | 5times/10 times/16 times rated power, AC voltage for 5mins | without combustion,open circuit allowed |
Applications:
Complete insulation suitable for printed circuit boards,power supplies,voltage dividers,motor controllers,automotive applications,power electronics circuits.
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Ceramic Cement Wire Wound Resistor Pre Charge For Voltage Equalizing
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