background image

2

SERIOUS COMMITMENT

All products of our company carry one year limited warranty

from the date of shipment. If any such product proves defective

during this warranty period we will maintain it for free. Meanwhile

we implement lifetime service. Except otherwise agreed by

contract.

SAFETY REQUIREMENTS

Please read the following safety precautions carefully to avoid

body injury and prevent the product or other 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 connected to the live terminal, please do

not connect or disconnect the test wire.

Grounding

The product is grounded through the power wire; besides, the

Summary of Contents for HT2571B

Page 1: ...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...

Page 2: ...and prevent the product or other 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 main...

Page 3: ...d the instruction manual to acquire 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 an...

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 tak...

Page 5: ...5 Contents I Introduction 6 II Technical Specifications 8 III Operation Instructions 9 IV Notes 11 V Packing list 13...

Page 6: ...into AC low frequency constant current through the auxiliary grounding electrode C and the circuit composited by the measured object E Then on measured object generate AC voltage drop that will be se...

Page 7: ...DC current into AC low frequency constant current for the measurement 3 Auxiliary grounding resistance can change in the range of 0 2K RC 0 40K RP that will not affect measurement results 4 Without m...

Page 8: ...AC 0 19 99V 3 Measurement accuracy and resolution Accuracy 0 0 2 3 1d 0 2 1999 9 1 5 1d 1 19 99V 3 1d Resolution 0 01 0 1 1 0 01V 4 Measurement errors caused by auxiliary grounding resistance and gro...

Page 9: ...ructions 1 Grounding resistance measurement Fig 1 As Fig 1 the straight line distance between ground electrode E C2 P2 and current probe C1is 40 meters Put potential probe P1 on the center of E C so t...

Page 10: ...t four probes into the measured soil along a straight line make sure the insertion depth is 20cm and spacing of each probes is 20cm connect terminals C1 P1 P2 C2 to the four probes with wire If the me...

Page 11: ...g 1 pull out the plug C1 insert the plug between E P1 and start the ground voltage gear EV the indicator lights The reading on LCD is AC ground voltage value between E P1 5 Completed measurement turno...

Page 12: ...esistance of large grounding grid the wiring method is different from the general method detailed wiring please refer the measurement requirement of current meter or voltmeter 4 When measuring groundi...

Page 13: ...will not be used for a long time all batteries should be removed to prevent the instrument from corrosion V Packing list No Name Qty 1 Instrument host 1 2 Test wire 1 5m 2 3 bobbin bracket 20m black w...

Page 14: ...14...

Page 15: ...15...

Page 16: ...16...

Reviews: