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Related Manuals for MEWOI MEWOI7900
Summary of Contents for MEWOI MEWOI7900
- Page 1 ROGOWSKI COIL CURRENT CLAMP...
- Page 2 USER MANUAL www.mewoi.com...
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Page 3: Table Of Contents
CONTENT Warning ..................... 1 I Introduction ..................... 3 II Electrical Signs..................5 III Technical Specifications ..............6 IV Structure of the Leaker ............... 8 V Operating Method ................9 1. Start-up, Shutdown ................. 9 2.Current,leak current Measurement ..........10 3. Peak Holding ................13 VI Function Quick Look Up .............. -
Page 4: Warning
Warning Thank you for purchasing our company's High Accuracy Clamp Leaker, for better use of this product, please: ——Read carefully the user's manual. ——Follow strictly safety rules and notes listed in this manual. Under any circumstances, please pay special attention to your safety in the course of using this instrument. - Page 5 If the shell or the test line breaks down and causes the metal to be exposed, please stop using it. The instrument and the flexible clamp must be maintained regularly, keep clean, and cannot be wiped with corrosion agent and rough material. ...
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Page 6: I Introduction
I Introduction The MEWOI7900 Rogowski current clamp is designed for the test of big current and leakage current. It is widely used in the fields of electric power, communication, meteorology, railway, oil field, construction, measurement, scientific research and teaching units, industrial and mining enterprises and so on. - Page 7 Flexible current clamp, namely Rogowski Coil (Rockwell coil), is a circular coil uniformly wound on non-ferromagnetic materials, no hysteresis effect, almost zero phase error, no magnetic saturation, high linearity, strong anti-interference ability. The output signal is the differential of current to time. By integrating the output voltage signal, the input current can be truly restored, and the current range can be from mA to 10000A.
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Page 8: Electrical Signs
II Electrical Signs Extremely dangerous! Operators shall strictly keep to safety rules; otherwise there would be dangers of electric shock to cause personal injuries or casualties. Dangerous！Operators shall strictly keep to safety rules; otherwise there would be dangers of electric shock to cause personal injuries or casualties. -
Page 9: Technical Specifications
III Technical Specifications Function Big AC current, leakage current measurement Power Zn-Mn dry battery,6F22,9V Flexible CT: the output signal is the differential of the current to the time. By integrating the Test Mode output voltage signal, the input current can be restored. - Page 10 Backlight Support Weight 200g Electric field hysteresis effect strong interference anti-interference ability The position error of the measured wire should be at the center of the flexible coil as far as Position Error possible, not close to the opening port, and the test error at the opening port is about twice or more.
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Page 11: Structure Of The Leaker
Insulation 100M Omega or larger, 1000V resistance Applicable IEC1010-1、 IEC1010-2-032、 pollution grade 2、 Safety Rules CAT VI (1000V) IEC61326 (EMC standard) IV Structure of the Leaker 1. Flexible Coil 2. Locking or opening a coil in the direction of the arrow. 3. -
Page 12: Operating Method
V Operating Method 1. Start-up, Shutdown Short Press key to start up, LCD will begin to display; Press the POWER key again to shut down. After starting up for 5 minutes, LCD will POWER flick to remind that the instrument will shut down automatically; after flickering for 30s, it will shut down formally to reduce battery consumption. -
Page 13: Current,Leak Current Measurement
2.Current,leak current Measurement High voltage, extremely dangerous! Operators shall strictly observe safety rules; otherwise there would be risk of electric shock to cause personal injuries or casualties. Dangerous！Please don’t use it to measure voltage higher than 600V; otherwise there would be risk of electric shock to cause personal injuries or equipment damages. - Page 14 2） According to the OPEN direction of the instrument structure to unscrew the lock, grabbed the tested wire, and then rotate in the direction of CLOSE to lock the flexible coil 3） If the instrument displays the "OL" symbol, indicates that the measured current is beyond the upper limit of the instrument.
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Page 16: Peak Holding
Clamp the Live Wire or null separately to test the single current of the line (Note 1 Wire) Clamp live wire and null line together is to measure the single phase leakage current. (Note: 2 Wires) Clamp earth wire is to measure grounding line leakage current of electrical equipment. - Page 17 acquisition mode. The symbol “ ”shows that the instrument automatically captures the current peak value in the time period, and loosely returns to the test state ("symbol “ ” does not show). 4. Hold, Storage and Access Reading 1）Pressing key(less than 3seconds) for a short time in the HOLD course of measurement (less than 3 seconds), symbol will...
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Page 18: Function Quick Look Up
VI Function Quick Look Up Key Short Press Power on/shutdown/exit POWER Short HOLD Data Holding/release/storage Press(less than 3 seconds) Key Pressing Peak Holding HOLD for more than 3s (at measuring mode) Key Pressing Press HOLD Data Access(at measuring mode) for 3s Key Pressing Press HOLD Clear Data(at access data mode) -
Page 19: How To Change Battery
---Data Held ---Stored unit ID is NO.03. 4. ---Access the unit 3 of the stored Data VIII How to Change Battery Warning! It is dangerous to carry out test when the battery cover plate was not on its position. Please pay attention to the polarity of battery to avoid damaging the leaker. -
Page 20: Accessories
plate. IX Accessories Rogowski Coil Tester 1 pc 1 pc Battery（6F22 9V） 1 pc User Manual 1 copy -17-... - Page 21 esting pecialist...
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