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HZG

Dry Type Testing Transformer

Huazheng Electric Manufacturing (Baoding) Co., Ltd

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Summary of Contents for HZG

Page 1: ...HZG Dry Type Testing Transformer Huazheng Electric Manufacturing Baoding Co Ltd ...

Page 2: ...s of instruments and equipment under testing users should pay attention to reliable control and reasonable utilization Users must abide by the following rules at any time Before connecting with power source testing transformers must be grounded Power source can not be connected before grounding ...

Page 3: ... Parameters 1 IV Operating Principle 2 V Methods of Application 3 VI Precautions 4 HZXZ Control Box 6 I Product Overview 8 II Working Principle 8 III Technical Parameters Specifications and Selection and Matching 9 IV Operational Guidelines 9 V Use and Maintenance 10 VI Conditions of Use 10 Packing List 11 ...

Page 4: ...series products are applicable to power system and all power users to detect on site the insulating performance test of all electrical equipment high voltage power sources of all appliance s voltage system or equipment with DC high voltage small current II Technical Target 1 Impedance voltage 4 5 8 2 Surface temperature rise sine wave 3 Idle load loss consumption 0 2 0 35 4 Allowable continuous op...

Page 5: ...high voltage continuously adjust from 0V to rated maximum value When DC withstand voltage and leakage current testing are conducted the input voltage can be changed as long as high voltage silicon stack is rotary installed at high voltage output terminal resulting in achieving DC high voltage output with different value For detailed working principle of this series products see Figure 1 if used as...

Page 6: ...e operation users must be aware of the electric principle wiring diagrams of high voltage testing transformer and power control box During checking DC withstand voltage and leakage testing high voltage silicon stack or microammeter can be suspended at high voltage terminal of high voltage testing transformer 3 When preparation is ready and the circuit is right after checking the main power can be ...

Page 7: ...cified time then informing by alarm If the testing products are punctured over current relay will trip automatically the ammeter value will read number at this time the number is the value of puncturing voltage by products 6 If the testing products need protection are punctured discharge voltage of protective ball can be adjusted to about 1 15 times that of testing voltage at continuous protective...

Page 8: ...the power can be connected until power off for 2 hours Continuous operation can be done under two thirds of rated voltage and two thirds of rated current 3 In normal insulation of high voltage appliance this series products are not allowed to operate in case of exceeding rated output voltage 4 When this series products consist of cascade high voltage test users should pay special attention to chec...

Page 9: ...u plug and unplug the test line power socket will produce electric spark be careful of electric shock avoid electric shock danger pay attention to personal safety Solemn commitment The products manufactured by the company shall be replaced within three months from the date of shipment in case of any defect Within one year including one year if the product defects implementation of free maintenance...

Page 10: ...product Before connecting to this product please read the product manual for further information about the rating Do not operate without instrument cover Do not operate the product if the cover or panel has been removed Use proper fuses Only use fuses that conform to the specified type and rating of this product Avoid contact with exposed circuit and live metal Do not touch the exposed contacts an...

Page 11: ... II Working Principle This series of control boxes are composed of contact voltage regulator more than 50KA is electric column voltage regulator and its control protection measurement and signal circuits It adjusts the voltage regulator i e the input voltage of the test transformer by connecting 220V or 380V power frequency power supply to obtain the required test high voltage voltage value Its wo...

Page 12: ...0kg 6 Dimensions 400X320X390 mm IV Operational Guidelines Before operation the maximum working current should be calculated and the current protector should be adjusted according to the capacity and voltage level of different subjects The test wiring should refer to Figure 1 of this specification or the related connection schematic diagram of the test transformer and the grounding end should be we...

Page 13: ...be returned to zero the power supply should be cut off and the tested product should be checked V Use and Maintenance 1 When checking and accepting the open box check whether the main control circuit wiring is loose and whether the voltage regulator brushes are in good contact 2 When not in use for a long time 500 V Megohmeter is used to measure insulation resistance before use and its resistance ...

Page 14: ...11 Packing List No Item Qty 1 Booster 1 2 Control box 1 3 Power line 1 4 Test line 1 5 Silicon heap 1 ...

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