KNP-A तार घाव प्रतिरोधकहरू फ्लेमप्रूफ Anti-Burst विशेषताहरु: १ सुरक्षित असफल बिना आगो, विस्फोट र छन् कहिले मुख्य भोल्टेज ~० ~ २0०V AC सिधा लागू गरियो। २ उच्च डाइलेक्ट्रिक Withstरभित्रg भोल्टेज माथि लाई १KV 3 Anti-Burst निर्माण भित्र a सिरेमिक ट्यूब, प्रतिरोधी लाई आर्द्रता र भित्रsulation. ।। UL1412 स्वीकृत
KNP-A Wire Wound Resistors Flameproof Anti-Burst
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Products |
KNP-A Wire Wound Resistors, Flameproof, Anti-Burst |
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Features |
1. Fail-Safe without flames,explosion and are when mains voltage 80~270V AC directly applied. 2. High Dielectric Withstanding Voltage up to 1KV. 3. Anti-Burst construction in a ceramic tube, resistant to humidity and insulation. 4. UL1412 approved. |
Electrical And Mechanical Performance:
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Characteristics |
Standards |
Test Methods |
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Resistance Tolerance |
±5%(J) |
- |
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Resistance Temp. Coeff. |
<4500 ppm/°C |
-55°C ~ 200°C |
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Power Rating Load |
Surface temp. 275°C Max.ΔR/R≤±1% |
Rated voltage for 30 minutes |
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Short Time Overioad |
±2% |
5 times of rated wattage for 5 seconds.
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Dielectric Withstanding Voltage |
No evidence of mechanical damage or insulation breakdown.
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AC 1000V for 1 minutes.
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Insulation Resistance |
10,00MΩ |
DC 500V megger
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Terminal Strength
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No evidence of mechanical damage.
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1 kg
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Solder-ability |
Minimum95%coverage |
235 ± 5°C for 2 seconds |
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Resistance to Soldering Heat |
No evidence of mechanical damage.ΔR/R≤±1% |
270±5°C for 10 ±1 seconds 350±10°C for3.5 ±0.5seconds |
Environmental Characteristics:
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Characteristics |
Standards |
Test Methods |
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Temp. Cycle |
△R/R≤±1% |
-55°C( 30 min.) —►Room Temp.( 3 min.) —► +200°C( 30 min.) —► Room Tenp.( 3 min.) / ( 5 cycles) |
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Load Life |
△R/R≤±3% |
Rated power load 90 minutes ON 30 minutes OFF 70°C 1000 hours |
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Moisture-proof Load Life |
△R/R≤±3% |
Rated power load 90 minutes ON 30 minutes OFF 40°C95%RH1000 hours |
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Nonflammability
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not flamed
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16 times of rated wattage for 5 min.
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Dimensions:
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Rated Wattage |
D±1 |
L±1 |
X Max. |
H±3 |
d±0.1 |
Resistance Range(Ω) |
|
1WS |
4.5 |
6 .5 |
9 |
28 |
0.65 |
1~47 |
Derating Curve :
For resistors operated in ambient temperatures above 20°C , power rating must be derated in accordance with the curve below.
Surface Temperature Rise:
