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Dear Client

Thank you for Purchasing our

HTHL-100B Micro Ohmmeter

.

Please read the manual in detail prior to first use, which will help

you use the equipment skillfully.

Our aim is to improve and perfect the

company's products continually, so there may be

slight differences between your purchase equipment

and its instruction manual. You can find the changes

in the appendix. Sorry for the inconvenience. If you have further

questions, welcome to contact with our service department.

The input/output terminals and the test column

may bring voltage, when you plug/draw the test wire or

power outlet, they will cause electric spark. PLEASE

CAUTION RISK OF ELECTRICAL SHOCK!

Company Address:

T4

No. 41, High-tech 2 Road

East Lake High-tech Development Zone

Wuhan

Sales Hotline: 86-27- 87457960

After Service Hotline

:

86-27- 87459656

Fax: 86-27- 87803129

E-mail: [email protected]

Website: www.hvtest.cc

Summary of Contents for HTHL-100B

Page 1: ...an find the changes in the appendix Sorry for the inconvenience If you have further questions welcome to contact with our service department The input output terminals and the test column may bring voltage when you plug draw the test wire or power outlet they will cause electric spark PLEASE CAUTION RISK OF ELECTRICAL SHOCK Company Address T4 No 41 High tech 2 Road East Lake High tech Development ...

Page 2: ...er relevant subassembly to damage In order to avoid possible danger this product can only be used within the prescribed scope Only qualified technician can carry out maintenance or repair work To avoid fire and personal injury Use Proper Power Cord Only use the power wire supplied by the product or meet the specification of this produce Connect and Disconnect Correctly When the test wire is connec...

Page 3: ...quire information about the ratings Do Not Operate without Covers Do not operate this product when covers or panels removed Use Proper Fuse Only use the fuse with type and rating specified for the product Avoid Touching Bare Circuit and Charged Metal Do not touch the bare connection points and parts of energized equipment Do Not Operate with Suspicious Failures If you encounter operating failure d...

Page 4: ... Security Terms Warning indicates that death or severe personal injury may result if proper precautions are not taken Caution indicates that property damage may result if proper precautions are not taken ...

Page 5: ... 9 6 Measurement Principle 10 7 Operating Method 10 8 Matters Needing Attention 12 9 Fault Phenomenon And Elimination 12 10 Packing List 14 Appendix 1 Basic knowledge of contact resistance 错误 未定义书签 Appendix 2 Circuit Breaker Conductive Loop Resistance Standard Reference Value 错误 未定义书签 ...

Page 6: ...stry of Power Standard SD301 88 AC 500KV power equipment handover and preventive test procedures and the new Power Equipment Preventive Test Procedures to make the measurement current of the circuit breaker isolation switch contact resistance is not less than DC 100A To ensure accurate test results The instrument is designed according to the latest power standard DL T845 4 2004 of the People s Rep...

Page 7: ...itable for other applications requiring high current and micro resistance measurement 3 Features 1 Large current Using the latest power technology it can continuously output large current for a long time overcomes the shortcomings of the pulsed power supply instantaneous current can effectively penetrate the switch contact oxide film and obtain good test results 2 Strong anti interference ability ...

Page 8: ...e and light weight 4 Specifictions 1 Measurement range 1 1999μΩ 2 Discrimination 1μΩ 2 Test current DC 50A 100A two speed fixed output 3 Measurement accuracy 0 5 1d 4 Working mode continuous 5 Display mode three and a half LCD 6 Working power supply AC220V 10 50Hz 7 Ambient temperature temperature 10 C 40 C humidity 80 RH 8 Volume 300 length 290 width 220 height mm3 10 Quality 6kg without accessor...

Page 9: ...Figure 1 Panel structure 1 Resistance display μΩ 2 Grounding Rod 3 Current Output I 4 Measurement input U 5 Measurement input U 6 Current Output I 7 Power outlet 8 Power switch 9 Test button 10 Current Selection Switch ...

Page 10: ...am By the current source through the I I two ports also known as the I port to supply the measured resistance Rx current the size of the current has ammeter I read out Rx voltage drop U U two ports also known as V port take out by the voltmeter V read out Through the measurement of I and U the resistance of the tested resistance can be calculated 7 Operating Method 1 Connect according to the figur...

Page 11: ... test object and the voltage line should be clamped inside the test object The current and voltage must be the same polarity 4 After checking and confirming the error connect 220V AC close the power switch and the instrument enters the power on state 5 Adjust the Current Selection knob to select the current gear to be selected and then press the Measure button The resistance meter display value is...

Page 12: ...instruction manual 3 This instrument must not test the loop resistance in the live loop 4 The instrument must be reliably grounded during use 5 The user of the current line must not be replaced at will 6 When the instrument is not in use it should be stored in a ventilated dry cool clean place pay attention to moisture and corrosion proof gas 9 Fault Phenomenon And Elimination Fault phenomenon Tro...

Page 13: ...nd not in good contact Check that the Current Selection key is selected correctly The resistance value is shown to be significantly larger or to be 1 over range during the test Check if the measured resistance is too large Check whether the voltage input line is connected to the inside of the current output line Check whether the voltage output line is connected properly and whether the tested joi...

Page 14: ...ct are in contact with each other 2 What are the components of the circuit breaker contact resistance It consists of two parts the shrinkage resistance and the surface 1 Host 1 2 Special test line two high current lines 6m two high current test clips two voltage test lines 6m 1 3 Ground wire 1 4 5A Fuse 3 5 Accessory package 1 6 AC220V Power Cord 1 7 Instruction manual 1 8 Certificate 1 9 Inspecti...

Page 15: ...e of the moving and static contacts is oxidized and the contact surface resistance is increased Long term operation deforms the spring and reduces the contact pressure Mechanical wear caused by long term operation of the mechanical part For oil less circuit breakers it may also be acidic due to the acid value of the insulating oil eroding the contact surface Or floating impurities in the oil after...

Page 16: ...urface Appendix II Circuit Breaker Conductive Loop Resistance Standard Reference Value Model Loop resistance per phase μΩ Model Loop resistance per phase μΩ SN1 10 95 DW1 60G 200 SN2 10G 75 SW1 110 700 SN4 10 50 60 SW2 110I 180 SN4 20 50 60 SW3 110 160 SN4 10G 20 SW4 110 300 SN4 20G 20 SW6 110 180 220 SN5 10 100 SW2 220 400 SN6 10 80 SW4 220 600 SN10 35 75 SW6 220 400 DW1 35 550 SW7 220 190 DW1 60...

Page 17: ...17 DW2 110 800 KW3 220 110 KW1 110 150 KW4 220 130 KW3 110 45 DW2 220 1520 KV4 110A 60 DW3 220 1200 DW3 110G 1600 1800 SW6 330 600 ...

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