SPECIFICATION |
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| Type | Wattage | DIMENSIONS IN MM | Range in OHMS [Ω] | Tolerance | Dielectric withstanding Voltage | ||||
| D | L | H | d | ||||||
| WWN 1 | 1 | 3.20 ±0.5 | 9 ±0.5 | 27 ±1.0 | 0.60 ± 0.02 | 0.1 | 60 | 5% | 350 V |
| WWN 2 | 2 | 4.25 ± 0.5 | 11 ± 1.0 | 27 ± 1.0 | 0.65 ± 0.02 | 0.1 | 60 | 5% | 500 V |
| WWN 3/ WWN 4 | 3/4 | 5 ±0.5 | 15 ± 1.0 | 27 ±1.0 | 0.75 ± 0.05 | 0.1 | 220 | 5% | 500 V |
| WWN 5 | 5 | 6 ± 0.5 | 18 ± 1.0 | 30 ± 1.0 | 0.75 ± 0.05 | 0.1 | 600 | 5% | 500 V |
| WWN 6/ WWN 7/ WWN 8 | 6/7/8 | 8 + 1.0 | 25.00 ± 1.0 | 38 ±3.0 | 0.80 ± 0.05 | 0.1 | 1K | 5% | 500 V |
| WWN 9 / WWN 10 | 9/10 | 8± 1.0 | 30 ± 1.0 | 38 ±3.0 | 0.80 + 0.05 | 0.1 | 1 K | 5% | 1000 V |
WIRE WOUND RESISTORS – NON INDUCTIVE
The WWN series wire wound resistors – non inductive have very low inductance (less than 1µH), high heat dissipation and low TCR. The resistors are coated using layers of Flame Proof Epoxy with axial lead wire. In WWN series, resistors up to 5W, the resistance value is color coded with 3 bands plus a tolerance band. An additional yellow band indicates that the resistor is Non Inductive. For resistors 6W and above, the value is printed on the resistor.
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ELECTRICAL PERFORMANCE
| Tests | Condition | Spec |
| Resistance Temp. Coeff. | -55°C ~ 200°C | ± 200 ppm/°C |
| Short Time Overload | 5 times of rated wattag e for 5 sec for upto 3w10 times of rated wattage for 5 sec. above 3w | ±2% |
| Rated Load | Rated voltage for 30 min. | ± 0.5% |
| Insulation Resistance | 500 V megger | 1,000MΩ |
| Load Life | 70°C on-off cycle 1,000hrs. | ±3% |
STANDARD RESISTANCE VALUES
E 24 Series
| 10 | 11 | 12 | 13 | 15 | 16 | 18 | 20 | 22 | 24 | 27 | 30 |
| 33 | 36 | 39 | 43 | 47 | 51 | 56 | 62 | 68 | 75 | 82 | 91 |
| Colour | lst figure | 2nd figure | Multiplier | Tolerance |
|---|---|---|---|---|
| Black | 0 | 0 | 1 | |
| Brown | 1 | 1 | 10 | ± 1% |
| Red | 2 | 2 | 100 | ± 2% |
| Orange | 3 | 3 | 1,000 | |
| Yellow | 4 | 4 | 10,000 | |
| Green | 5 | 5 | 100,000 | ± 0.5% |
| Blue | 6 | 6 | 1,000,000 | ± 0.25% |
| Violet | 7 | 7 | 10,000,000 | ± 0.1% |
| Gray | 8 | 8 | ||
| White | 9 | 9 | ||
| Gold | 0.1 | ± 5% | ||
| Silver | 0.01 | ± 10% |
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