Huazheng HZ-139S User manual

HZ-139S
Three-Phase High-Current Tester
User Manual
Huazheng Electric Manufacturing (Baoding) Co., Ltd

Dear use r:
Thank you for choosing HZ-13 9S Thre e- Ph as e Hi gh-C urrent Tester.
We hop e th at th is instrum en t can mak e your work easie r and more
en jo ya bl e, so that you can get the feel in g of off ic e automati on in the test
an d an al ys is work.
Before using the instrument, please read this man ua l, and oper at e and
maintain the instrume nt accordi ng to the ma nu al to pro lo ng its se rvice life .
"Just a lig ht pr ess, th e test will be completed automatically " is the
op er ating cha racteristics of this instrument.
If you ar e satisfi ed with this instrume nt, please tell you r co ll ea gu es ;
if you are no t satisfi ed with this instrum ent, please ca ll [phone] to
te ll yo u to serve you at all tim es-Baoding Huazheng Elect ri c Manufacturing
Co. , Lt d., our comp an y will def initel y make you satisfied !

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Contents
I.Overview......................................................................................................................................... 2
II.Main performance indexes......................................................................................................... 2
III.Panel and function description..................................................................................................2
IV.Working principle.........................................................................................................................5
V.Method of operation.....................................................................................................................6
VI.Matters needing attention..........................................................................................................7
VII.Packing list..................................................................................................................................8

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I.Overview
Hz-139s three-phase high-current tester adopts aluminum alloy chassis, PC panel,
beautiful appearance;High quality ring lifter is adopted, with large output capacity, small
volume and light weight.It is controlled by ARM chip and adopts large LCD screen to
display the primary current and fixed voltage value at the same time.It protects itself
when it's overloaded.It is intuitive and easy to read;With three - phase voltage output,
automatic electronic protection function.It is mainly used in the primary loop channel test
of three-phase system, and can also be used in CT variation-ratio test and occasions
where large current output is required for contact resistance.
II.Main performance indexes
2.1 Input power supply: THREE-PHASE four-wire AC380V/220V·20A, 50Hz.
2.2 Output current: AC 0 ~ 300A·15V/ phase, output current exceeding 330A, automatic
excision output.
2.3 Rated voltage output: AC 58V·3A/ phase.
2.4 LCD digital current and voltmeter:
Range: 0 ~ 350A; Resolution rate: 0.1a; Accuracy: True RMS ±0.5%;
Range: 0 ~ 100V; Resolution rate: 0.1a; Accuracy: True RMS ±0.5%.
2.5 Dual protection (overload electronic protection and software protection).
2.6 Use environment: temperature -1040℃, relative humidity <80%.
2.7 Volume: Three-phase voltage regulator: 280mm×220mm×450mm;
Large current tester: 610mm×240mm×290mm.
2.8 Weight: three-phase voltage regulator: 25kg; Large current tester: 45kg.
III.Panel and function description
(1) Three-phase contact voltage regulator panel

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3.1.1 Three-phase four-wire power input terminals: This set of terminals is the
three-phase four-wire power input terminals, which are connected to the power supply
with the matching special four-core cable. Power capacity: 380V/220V·20A.
3.1.2 Output terminals of three-phase power: This set of terminals is the output terminal
of three-phase four-wire 380V power supply, and the four-core cable is connected to the
three-phase power input aviation socket of hZ-139S three-phase large-current host.
3.1.3 Three-phase voltage output terminals: This set of terminals outputs the 0 ~ 430V
three-phase voltage after voltage regulation. Connect the terminals with a three-core
cable to the input socket of the voltage regulator of the hZ-139S three-phase
large-current host.
3.1.4 Three-phase large current adjustment knob: it is used for the adjustment of
three-phase large current.
3.1.5 Output button: Press this button, the three-phase voltage regulator is in output state,
and the button indicator is on.
3.1.6 Cut out button: Press this button, the three-phase voltage regulator is cut out, and
the output button indicator light is off.
3.1.7 Grounding terminal, for the safety of use, this terminal should be grounded during
use.
(II) HZ-139S three-phase large-current tester panel

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3.2.1 Three-phase power input aviation socket: this socket is connected to aviation
socket of voltage regulator 380V power output end.
3.2.2 Power indicator: Used to indicate whether the three-phase power supply is normal.
3.2.3 Input socket of voltage regulator: This socket is connected to output end of voltage
regulator 0 ~ 430V.
3.2.4 Output indicator light of the voltage regulator: It is used to indicate the output
voltage of the voltage regulator. When the output voltage of the voltage regulator is lower
than 60V, the light will not turn on.
3.2.5 Large current output terminals: This group of terminals outputs large three-phase
AC current, which is 0 ~ 300A/ phase, and the port voltage is 15V/ phase.
3.2.6 Three-phase voltage output terminals: This set of terminals outputs three-phase AC
voltage, which is 58V/ phase and the maximum output current is 3A/ phase.
3.2.7 Grounding terminal: The terminal shall be grounded with a special wire for safety.
3.2.8 Cut out button: Press this button to cut out the three-phase voltage and put out the
indicator light of the output button.
3.2.9 Output button: Press this button, three-phase voltage is output, and the button
indicator is on.
3.2.10 LCD: display current and voltage values.
3.2.11 Serial port can be connected to PC for program update.
3.2.12 LCD display adjustment: Used to adjust the backlight of the LCD screen.

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IV.Working principle
The circuit is shown in the figure above, AC:380V power supply is input by UA, UB,
UC, UN, and regulated by TY voltage regulator, KA, K.B, K.CControl, T1A current lifter,
through the current transformer by Ia, Ib, Ic, In4High three-phase current output. After
transformer T2A, the fixed voltage is output to Ua, Ub, Uc and Un through electronic
protection.
ARM controller handles data display and control output of mouse and signal board.

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V.Method of operation
Use the company's special power input line, special output large current line,
connection line and ground line, etc. After connecting the line according to the figure
above, first return the voltage regulator to zero, and then plug in the 380V power supply
(if the field power socket is far from the use of power plate, the cross section of the
conductor should be no less than 4.0mm2, otherwise the output power will be affected),
the screen shows "Welcome to use the three-phase large current tester", then enter the
use interface, as shown in the figure below

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The voltage V
Current A
A road
00.00
000.0
B road
00.00
000.0
C road
00.00
000.0
When the power indicator of the host machine is on, press the output button on the
voltage regulator. The output button indicates that the red light is on and the voltage
regulator is in the output state. Then adjust the voltage regulator, and there will be
three-phase current output at the large-current terminal of the host. At this point, press
the cut button to stop the current output.
Press the output button on the host, and the output button indicates that the red light
is on. The voltage output at the fixed voltage is 58V. At this point, press the cut button to
stop the voltage output.
VI.Matters needing attention
1. In order to ensure the safety of the test, the device should be reliably grounded before
the test.
2. During the test, it is strictly prohibited to connect and dismantle the test line.
3. The company's supporting input and output lines shall be used.
4. The cross section of the input power cable of the tester shall be greater than 2mm2,
large current output connection cable section should be as short as possible output
connection cable length.
5. Prolonged continuous output should be avoided.

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VII.Packing list
No.
Item
Qty
1
Tester host
1
2
Contact voltage regulator
1
3
Test facilities
3
4
Power input wire (four-core sheath)
1
5
Voltage regulator input line (with aviation head)
1
6
Voltage regulator output line (three-core sheath)
1
7
Voltage output line (four-core sheath)
1
8
Ground wire
2
9
Insert (8 mm)
5
10
Clip (10 mm)
5