HVTest HT5600 User manual
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Dear Client
Thank you for Purchasing our HT5600 Earth Resistance
Tester. 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
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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
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ground pole of the shell must be grounded. To prevent electric
shock, the grounding conductor must be connected to the ground.
Make sure the product has been grounded correctly before
connecting with the input/output port.
Pay Attention to the Ratings of All Terminals
To prevent the fire hazard or electric shock, please be care of
all ratings and labels/marks of this product. Before connecting,
please read 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 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, do not continue. Please
contact with our maintenance staff.
Do Not Operate in Wet/Damp Conditions.
Do Not Operate in Explosive Atmospheres.
Ensure Product Surfaces Clean and Dry.
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－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.
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Contents
I .Introduction............................................................................................. 6
II .Overview................................................................................................ 6
III .Main Features...................................................................................... 7
IV. Main Technical Index......................................................................... 8
V. Panel Features..................................................................................... 8
VI. Measurement principle and application........................................ 10
(1) Two- clamp method.......................................................................10
1、The measuring principle............................................................10
2、Multi-polar parallel grounding resistance measurement..... 11
3、Two-clamp method measure the independent grounding
objection............................................................................................. 13
(2) Four-leads method........................................................................ 14
(3) Store.................................................................................................14
(4) View / Delete.................................................................................. 15
(5) Keep.................................................................................................15
VII. Notes..................................................................................................16
VIII. Accessories..................................................................................... 16
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I .Introduction
HT5600 Clamp Earth Resistance Tester with multi-function
used in evaluation on ground resistance. Our company are
experienced in designing and manufacturing ground tester.
Is hand portable and is equipped with the necessary
attachments. It is easy to use. Operators can use it just following
this instruction without participating in specialized training.
II .Overview
It is important for electricity, telecommunications, electrical
equipment to ground. Grounding resistance is widely used in the
judgment of the grounding quality of system. Accurate, rapid,
simple, reliable grounding resistance measurement methods are
important in the field of lightning protection grounding technology.
ET3000 Multi-function dual-clamp grounding resistance tester is
suitable in telelecommunications, electricity, meteorology, computer
room, power distribution lines, transmission line tower, gas stations,
factories grounding grids, lightning and so on.
Can be used in traditional auxiliary electric pole grounding
resistance measuring and also can be used without auxiliary
electric-pole which can test the grounding resistance in duty without
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contacting the grounding system and load. Auxiliary electric-pole
test method can be used just in single-point grounding system or
strong interference conditions.
III .Main Features
1. Dual-Clamp method & pile method:
Grounding for any place, multi-point or single point grounding;
2. Anti-interference ability:
Self-generated high frequency current can be used to filtered
harmonic interference of industory power ,so it will measure
accurately under 500KV substation;
3. Wide measuring range, high resolution:
Range from 0.01Ω ~ 200Ω, resolution of 0.01Ω, grounding
resistance lower than 0.7Ω can be measured accurately;
4. Great gag Design:
Gag diameter is 50mm (standard configuration) and it can
meet with flat iron and steel wire ;special gag custom sizes can be
customized;
5. Large-capacity data storage:
200 sets of measurements can be stored;
6. Easy to operate with single-person:
Chinese operation interface, small size, light weight, portable
explosion-proof box, easy to carry for outdoor measurement.
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IV. Main Technical Index
1、Grounding resistance measuring range:
Two-clamp method：0.01Ω～200Ω
Four-leads method：0.01Ω～200Ω
2、Error:
Two-clamp method：±3%±2d
Four-leads method：±2%±2d
3、Minimum resolution：0.01Ω
4、Clamp size：Φ50mm
5、Storage capacity: 200 group data
6、Working temperature: 0ºC ～+ 50°C
7、Power Supply: Eight 5 Ni-MH rechargeable batteries or
regular AA batteries
8、Weight：0.8kg (including battery)
9、Dimensions：265mm×130mm×65mm
V. Panel Features
1、button features
The tester has total seven buttons, the following specific
features:
“Power Supply”: if has opening, after five minutes without
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any operation , it will be automatically shutdown.
“Two-clamp method▲”: In multi-point grounding of the
grounding grid, to test this way; In addition, other functions, the key
for the cursor up or increase the bond.
“Four-leads method▼”: Click here to play auxiliary keys
used to pile measured grounding resistance, while, in other
functions, the key for the cursor down or reduce the bond.
“ ”: The left cursor key
“ ”: The right cursor key
“Test”: When using the two-clamp method or four-leads
method, this key to start measurement.
“Confirmed”: Click here to enter the selected function.
2、Test port（refer to Figure 1）
(Figure 1: Terminal panel)
The instrument interfaces to connect with the outside world
there are two groups: the two-clamp method use upper "Receive"
and "Transmit" two jack; the four-leads method using the "C2",
"P2", "P1" and "C1" four jack.
Charge jack located at the bottom left of the equipment, when
the instrument displays the upper-left corner of the low battery
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indicator, please use the company’s charging instrument to charge.
It’s the smart charger for the battery charger. When the battery is
full, that is, the charger indicator light to turn off automatically stop
charging the battery, effectively preventing battery overcharge.
Note: if the instrument will not be used in long-term, you also
should be carried out regularly charge the battery (such as two
months) ,in order to avoid battery over-discharge damage. Do not
charge the battery when use ordinary batteries.
VI. Measurement principle and application
(1) Two- clamp method
1、The measuring principle
The method has many advantages. First, easy to operate. The
test can be executed when the device is working. No measuring
probes are needed and it is not necessary to separate the
electrodes. The grounding resistance can be obtained by clamping
the grounding conductor. Second, the method has high accuracy
to 0.01Ω. Third, the method has high anti-interference ability and
the line frequency harmonics can be filtered. Fourth, it can be a
way to piling method. In many conditions (such as housing or
regions covered with cement-intensive), it is difficult to adopt the
way of piling to measure the grounding resistance. But it is not
necessary for double clamp method. However there is shortage of
this method too. And it can not measure the grounding resistance
for a single point grounding system.
The measurement principle be summarized as follows: The
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