HTHL-100A 100A automatic transformer circuit breaker contact loop resistance micro ohm meter
وصف
100A 200A automatic transformer circuit breaker contact loop resistance micro ohm meter
Products features
- High current: For latest power supply technology, the tester can continuously output high current which overcomes the weakness of instantaneous current produced by pulsed power. It can effectively breakdown/puncture the oxide layer of the switches and then get precise results.
- Strong anti-interference ability: The last number of test data will stably show in the LCD screen only with ±1 error even in strong Interference situation.
- Long service life: All the precise resistances used in the tester can reduce the temperature’s impact on the measurement results and military connectors can enhance vibration resistance.
- Convenience: Small size, light weight.
تفاصيل المنتج
Product parameters
Measurement range | 0~1999 μΩ |
الدقة | 1μΩ |
Measured current | DC 100A |
دقة | 0.5%±1d |
عرض | 3-1/2 شاشات الكريستال السائل |
مزود الطاقة | AC220V±10% 50Hz |
Service conditions | درجة الحرارة -10℃~40℃, رطوبة:≤80%RH |
البعد | 300×270×200 mm |
وزن | 5كلغ(not including accessory) |
Brief introduction
Nowadays Power Systems widely use model QJ44 DC double arm bridge to measure contact resistance (DC resistance and Loop resistance of high-voltage circuit breaker) while the minimum current of such model is 1mA which hardly find the decrease of cross-sectional area of transformers’ conductive circuit conductor. The measurement of loop resistance of high voltage switchgear is affected by oil layer and oxide between static and dynamic contact port, so the resistance measurement value will be several times larger, and cannot reflect the true value of contact resistance. Therefore, the Ministry of Electric Power in national standards SD301-88 “AC 500KV Electrical Equipment Transfer and Preventive Test Procedure” and new version of ” Electrical Equipment Preventive Test Procedure” stipulate that the testing current of circuit breaker and isolating switch contact resistance is not less than 100أ to ensure accurate test results.
HTHL-100A Micro ohmmeter measures up to the latest power system standards–DL/T845.4-2004 designed for measuring loop resistance of Switching Control Equipment using High-frequency switching power supply technology and digital circuit technology. Test current of the Tester is DC 100A which is recommended in the national standards. The tester can measure the loop resistance at this value and display the result in digital. It is high precision and good stability and can meet most power systems’ requirements in onsite high-voltage switches maintenance and high-voltage switches factory loop resistance measurement. (It performances accurately and stably)
Wuhan Huatian Electric Power Automation CO., LTD was established in 1992, is one of the earliest and famous manufactures produce HV testing equipments. We are professional manufacture of electric equipments (design and production).Located in Wuhan East Lake New & HighTech .Industrial Development Zone, Huatian supplys advanced HV test equipments and detection instruments for electric system ,scientific research institution and manufactures related to electric equipments. Huatian is a high- technology company combines research , production and commerce as one. Our products widely used in electric power, الحفاظ على المياه, نفط, railroad, mine and chemical industry etc.Products have been successfully exported to the United States, Netherlands, إندونيسيا, بنغلاديش, Australia, Iran, الهند, Saudi Arabia, تايوان , Mongolia, Japan and other countries and regions.
معلومة اضافية
مكان المنشأ: | خبى, الصين |
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اسم العلامة التجارية: | Huatian |
رقم الموديل: | HTHL-100A |
نوع العرض: | الرقمية فقط |
Measuring Range: | 0~1999μΩ |
Testing Voltage: | AC220V ± 10٪ |
فئة الدقة: | 0.5%±1d |
درجة حرارة التشغيل: | -10℃~40℃ |
أبعاد: | 300*270*200mm3 |
اسم المنتج: | Contact resistance tester |
Measured range: | 0~1999μΩ |
دقة: | 0.5%±1d |
الدقة: | 1μΩ |
Measured current: | DC 100A |
عرض: | Three and a half LCD |
Diemension: | 300*270*200 mm3 |
وزن: | 5كلغ(not including accessory) |
مساهمة الجهد: | AC220V ± 10٪ |
ضمان: | 1سنة |