1000W Plate Shape High Power Wirewound Resistors,Voltage and Current Regulation
Structure:
1.ZB series Plate-shaped Wirewound Resistor is made of nickel chromium,constantan or new constantan alloy wire and other high-quality alloy wires wound on the iron plate with surface electroplating treatment, aluminum plate with surface anodizing treatment or mica plate. Ceramic devices are used to separate the winding wire from the base plate, so that the winding wire can drive over the base plate evenly and regularly, playing a good role in fixation, insulation and heat dissipation.
2.Aluminum plate or iron plate matrix has no fixed form and can be made according to customer requirements,breaking the limitations of the industry.
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.
Features:
1.Plate-shaped Wirewound Resistor with stable resistance,small change rate,high power,strong overload capacity.The corrugated winding mode (increasing resistance and eliminating parasitic inductance)and non-inductive winding mode can be realized, which can not only eliminate the parasitic inductance of the resistor, but also improve the heat dissipation .
2.It can also be flexibly changed according to customer requirements to make a single resistor with more than 2 resistance values or multiple resistors in series and parallel.
3.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 |
| 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 | △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 for regulating the voltage and current in low frequency AC circuit.resistance elements in series are used in motors,starting,braking and controlling speed.
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