Shanghai Huabang Industrial Business Network - measuring equipment

[measuring equipment]HJS-III Dielectric Loss Tester

2026-6-18 15:29:30

The HJS-III dielectric loss tester is used for on-site anti-interference dielectric loss measurement or laboratory precision dielectric loss measurement. The instrument is an integrated structure with built-in dielectric bridge, variable frequency power supply, test transformer, and standard capacitor. Adopting frequency conversion anti-interference and Fourier transform digital filtering technology, the measurement is fully automated and intelligent, and the measurement data is very stable under strong interference. The measurement results are displayed on a large LCD screen and come with a built-in micro printer for printing and output.

Main functional features of HJS-III dielectric loss tester
1.2.1 Frequency conversion anti-interference
Adopting frequency conversion anti-interference technology, it can accurately measure even under 200% interference, with stable test data, suitable for conducting anti-interference dielectric loss tests on site.
1.2.2 High precision measurement
By using digital waveform analysis and bridge self calibration techniques, combined with high-precision three terminal standard capacitors, high-precision dielectric loss measurement can be achieved.
The input resistance of all ranges of the instrument is below 2 ��, eliminating the influence of additional capacitance on the measurement cable.
1.2.3 Multi level security protection to ensure personal and equipment safety
High voltage protection: The test sample can cut off the output at high speed by short circuit, breakdown or high voltage current fluctuation.
Low voltage protection: In case of accidental connection to 380V, power fluctuation or sudden power outage, the protection will be activated without causing overvoltage.
Grounding protection: When the instrument is poorly grounded and the casing carries dangerous voltage, the grounding protection is activated.
C V T: Four protection limits for high voltage and current, low voltage and current, which will not damage the equipment; Misselected menu will not output excitation voltage. There is no 10kV high voltage output during CVT measurement.
Anti misoperation: two-stage power switch; Real time monitoring of voltage and current; Multiple button confirmations; The high/low voltage of the wiring terminal is clearly defined; Slow boost, can quickly reduce pressure, sound and light alarm.
Prevent "capacitance rise": When measuring large capacity test samples, there will be a "capacitance rise" effect of voltage rise. The instrument can automatically track the output voltage and maintain a constant test voltage.
Seismic performance: The instrument adopts a unique seismic design, which can withstand strong long-distance transportation vibrations and bumps without damage.
High voltage cable: It is a high-voltage insulated wire that can be dragged to the ground.
1.2.4 Powerful functions and product series
(1) It has positive/reverse wiring, internal/external standard capacitors, multiple working modes of internal/external high voltage, integrated structure, and can perform various conventional dielectric loss tests without the need for any external auxiliary equipment.
(2) LCD display, menu operation, rich test data, automatic discrimination of capacitive, inductive, and resistive samples, with a built-in micro printer for printing output.
(3) It has an external standard capacitor interface, which can be connected to an oil cup for precision insulation oil dielectric loss testing, an external solid material measuring electrode for precision insulation material dielectric loss testing, and an external high-voltage standard capacitor for high-voltage dielectric loss testing.
(4) Automatically identify 50Hz/60Hz system power supply and support generator power supply, even if the frequency fluctuates greatly, it can still be measured normally.
(5) Built in series and parallel dielectric loss measurement models for easy instrument calibration.
(6) Can store 255 sets of measurement data.
(7) When using the CVT self-excited method for measurement, C1/C2 can be measured simultaneously with one wiring, automatically compensating for the effects of bus grounding and standard capacitor voltage division, without the need for wire replacement or external accessories.
(8) Chinese graphic menu, large backlit LCD display for clearer clarity, real-time monitoring of current and voltage.
(9) Optimized circuit design ensures consistent accuracy and stability of forward/reverse wiring.
(10) Automatically identify the frequency of the external high-voltage test power supply between 40Hz and 70Hz, supporting high-capacity and high-voltage dielectric loss tests for power frequency power supplies, variable frequency power supplies, and series resonant power supplies.
(11) Equipped with reverse wiring low-voltage shielding function, C11 can perform 10kV reverse wiring dielectric loss measurement without disconnecting the wire when the 220kV CVT bus is grounded.
(12) Equipped with computer interface. Through this interface, measurement, data processing, and report output can be achieved, as well as upgrading the internal measurement software of the instrument. Can be integrated into a comprehensive high-voltage test vehicle.

Main technical specifications of HJS-III dielectric loss tester
Accuracy: Cx: ± (reading x 1%+1pF)
TG ��: ± (reading x 1%+0.00040)
Anti interference index: Frequency conversion anti-interference, can still achieve the above accuracy under 200% interference
Capacity range: Internal high voltage: 3pF~60000pF/10kV 60pF~1 �� F/0.5kV
External high voltage: 3pF~1.5 �� F/10kV, 60pF~30 �� F/0.5kV
Resolution: up to 0.001pF, 4 significant digits
Range of TG ��: unlimited, resolution 0.001%, automatic identification of three types of samples: capacitance, inductance, and resistance.
Test current range: 10 �� A~5A
Internal high voltage: Set voltage range: 0.5-10kV
Maximum output current: 200mA
Pressure rise and fall method: continuous smooth adjustment
Voltage accuracy: ± (1.5% x reading+10V)
Voltage resolution: 1V
Test frequency: 45, 50, 55, 60, 65Hz single frequency
45/55Hz, 55/65Hz, 47.5/52.5Hz automatic dual frequency conversion
Frequency accuracy: ± 0.01Hz
External high voltage: maximum test current of 1A when connected positively, frequency or variable frequency 40-70Hz
The maximum test current during reverse wiring is 10kV/1A, with a frequency range of 40-70Hz for power frequency or variable frequency
CVT self-excited low-voltage output: output voltage 3-50V, output current 3-30A
Measurement time: about 40 seconds, depending on the measurement method
Input power supply: 180V~270VAC, 50Hz/60Hz ± 1%, powered by mains or generator
Computer interface: Standard RS232 interface
Printer: Brilliance A7 Thermal Microprinter
Environmental temperature: -10 �� to 50 ��

[measuring equipment]GDGK - �� High and Low Voltage Switchgear Power Test Stand

2026-6-18 15:29:21

The GDGK-II high and low voltage switchgear power on test bench is used by high and low voltage switchgear manufacturers to conduct various power on tests on the produced high and low voltage switchgear before leaving the factory. It can provide various AC and DC power sources, facilitating the detection of switchgear and improving work efficiency.

Technical parameters of GDGK-II high and low voltage switchgear power on test bench
Input power supply: three-phase four wire AC380V
Output voltage and current:
1. One set of three-phase AC100V output (fixed value)
2. Three phase AC 0-10A output (<100V, adjustable value>one set)
3. Single phase 24V, 36V, 110V, 220V DC fixed output set
4. AC operation voltage output AC 0-400V, 220V, current less than 10A per group
5. DC operation voltage output: A set of DC 0-260V
6. One set of DC closing power supply output DC 0-300V (300A, short-term operation) (optional)
7. One set of single-phase AC220V output (fixed value, socket form)
8. One set of three-phase AC380V output (fixed value, terminal block)
9. Closing control contacts ��, �� Opening control contacts ��, ��
10. Dimensions/Weight: 550 × 750 × 800mm/45Kg
Note: This test bench can be designed and manufactured according to user requirements

[measuring equipment]BTC Transformer no-load load characteristic tester

2026-6-18 15:29:12

summary:
The BTC type transformer no-load load characteristic tester can simultaneously measure the AC voltage effective value, average voltage, effective power, power factor, frequency and other electrical parameters of single-phase or three-phase power supply transformers, with a measurement accuracy of 0.2 level. Its intelligent and professional design is suitable for transformer no-load and load characteristic testing, and it is an ideal replacement equipment for traditional pointer instruments.

Key Features:

1. A single machine can complete the load test of distribution transformers below 1600kVA under full current; At one-third of the rated current, the load test of distribution transformers below 3150kVA can be completed. At one-third of the rated current, the instrument can automatically convert the load loss parameters to the rated current.

2. 240 × 120 large screen LCD display, Chinese operation menu, high-speed printer to print test results. The instrument can store 20 sets of experimental data.
3. Using high-performance processors as the core of control and computation, with fast sampling speed and good data stability performance;
4. External voltage transformers and current transformers can be used for measuring high voltage and high current.

Main technical parameters:

Current measurement range	0.1A��150A	Measurement accuracy level 0.2	Effective value of three-phase voltage	Uab��Ubc��Uca
Voltage measurement range	10V��1500V	Measurement accuracy level 0.2	Three phase average voltage	/Uab��/Ubc��/Uca
Power measurement accuracy	Level 0.3		Effective value of three-phase current	La��lb��lc
Frequency measurement range	45��65Hz	Accuracy level 0.1	Percentage of no-load loss and no-load current	Pm��10%
Adding a transformer can broaden the measurement range of the instrument		Load loss, percentage of impedance voltage And short-circuit impedance		Pkt��ekt��Zt

[measuring equipment]SDJ series capacitor current tester

2026-6-18 15:29:03

The SDJ series power grid capacitor current tester adopts the latest domestic technology, which does not require switching capacitors or dealing with the primary side. It only needs to measure from the PT secondary side, and the entire measurement process is convenient, safe, and accurate.

Main Features
�� Easy to operate and safe. During testing, there is no need to work on the primary side of the distribution network, only signals are introduced through the PT opening triangle, thus avoiding the possibility of misoperation caused by contact with the primary circuit and the danger of explosion caused by external capacitors used for switching tests. The entire measurement work can be completed within one minute, which is very safe and convenient.
�� No special safety measures are required. Due to the weak measurement signal injected from the PT opening triangle, it will not have any impact on the relay protection and PT itself. The output terminal of this tester can withstand an AC voltage of 100V. If there is a single-phase grounding fault in the system during measurement, it will not damage the PT and tester, so no special safety measures are required.
�� The instrument has a small volume, light weight, and is easy to carry.
�� Strong anti-interference ability. By using a different frequency test signal, the 50Hz power frequency interference signal is avoided, and the test results are accurate, stable, and reliable.

Technical parameters of SDJ series capacitor current tester
The main technical specifications of the power grid capacitance current tester are as follows:
Capacitive current measurement range: 0-500A
Measurement error: �� 5%
Dimensions: 390mmx300mmx250mm
Weight: 4kg

[measuring equipment]ZD1 type lightning arrester live measuring instrument

2026-6-18 15:28:54

The ZD1 lightning arrester live measuring instrument can measure the resistive current and full current of three-phase lightning arresters while live without taking signals from PT. The entire measurement process is convenient, fast, and accurate. The measurement results can be used as a criterion for whether the lightning arrester is abnormal.

Product Introduction
Metal oxide arrester (MOA) has been widely used in power systems. In order to ensure its safe and reliable operation, it is necessary to regularly monitor the changes in its leakage current and resistive current. The diagnosis of early MOA faults is most sensitive in detecting resistive current. Therefore, manufacturers have launched various instruments for measuring resistive current.
The measurement of MOA resistive current with electricity is classified based on measurement principles, and commonly used methods include compensation method combined with phase shifting method, which can accurately measure MOA resistive current and its fundamental value. However, this method requires voltage signals to be taken from the PT secondary side, making the measurement very inconvenient. The harmonic method is relatively convenient for measurement, but it cannot measure the fundamental value of resistive current, which is the most critical value for determining MOA faults.

The ZD1 lightning arrester live measurement instrument adopts the latest measurement method for measurement, without the need to take voltage signals from PT. It can simultaneously measure the full current of three-phase MOA and the resistive component containing the fundamental value in a short time. It is suitable for lightning arrester groups composed of three-phase MOA, and MOA is grounded through an impedance counter; Not suitable for MOA with only one phase installed and the base directly grounded in a three-phase system.
This instrument is small in size and easy to carry. It has a printer and rechargeable battery inside, and can work without an external power source. The measurement results are directly output by the printer, making it convenient for users to organize.

Main Features
�� Easy to operate and safe. During testing, there is no need to work on the primary side of the distribution network, only signals are introduced through the PT opening triangle, thus avoiding the possibility of misoperation caused by contact with the primary circuit and the danger of explosion caused by external capacitors used for switching tests. The entire measurement work can be completed within one minute, which is very safe and convenient.
�� No special safety measures are required. Due to the weak measurement signal injected from the PT opening triangle, it will not have any impact on the relay protection and PT itself. The output terminal of this tester can withstand an AC voltage of 100V. If there is a single-phase grounding fault in the system during measurement, it will not damage the PT and tester, so no special safety measures are required.
�� The instrument has a small volume, light weight, and is easy to carry.
�� Strong anti-interference ability. By using a different frequency test signal, the 50Hz power frequency interference signal is avoided, and the test results are accurate, stable, and reliable.

[measuring equipment]PCI6000 Intelligent dielectric loss tester

2026-6-18 15:28:45

PCI6000 Intelligent Dielectric Loss Tester

1. Dielectric loss factor tg ��:
Measurement range: 0-100%
Accuracy: (1% reading+0.0005)

2. Capacitance Cx:
Measurement range: 3-40000pF (10KV)
3-100000Pf��3KV��
3. Accuracy: (1% reading+1pF)
4. Environmental temperature: 0-40 �� (when the temperature exceeds 20 ��± 5 ��,
The change in instrument basic error for every 10 �� change shall not exceed
1/2 of the basic error limit
5. Relative humidity: 30% to 85%
6. Power supply: Voltage: 220V ± 22V, Frequency: 50 ± 1Hz
7. Dimensions: 440 × 330 × 400 (mm)
8. Weight: not exceeding 23kg
9. Electronic circuit power consumption: not exceeding 40VA

PCI6000 Intelligent Dielectric Loss Tester

[measuring equipment]PCI Intelligent Switch Mechanical Characteristics Tester

2026-6-18 15:28:36

PCI intelligent switch mechanical characteristic tester

1. LCD display, waveform analysis, and easy operation
2. Time test: 1-3000 (ms)
3. Speed test: 0.1-20.00 (m/s)
4. Travel test: According to the selected sensor
5. Built in large capacity storage that can be connected to a computer

Structural type and size
�� Weight: 5kg (excluding accessories);
�� Dimensions: 380 × 170 × 300 (mm);
Use power supply
�� Voltage: AC 220V ± 10%; �� Frequency: 50Hz ± 5%;
Usage environment
�� Environmental temperature: -15 �� to 55 ��; �� Relative humidity:<80%;
safety performance
�� Insulation resistance:>2M ��; �� Leakage current:<3.5mA;
Dielectric strength: able to withstand 1500V (50HZ effective value) for 1 minute
Voltage withstand test;
Time test
�� Test channel: 6 fracture times and 1 auxiliary contact;
�� Measurement range: 0.2-3000ms;
�� Accuracy: ± (0.1% reading ± 2 words);
�� Resolution: 0.1 ms;
speed test
�� Sensor: Resistance linearity: �� 0.1%;
�� Sampling rate: 20K; �� Speed measurement range: 0.1-20.00 m/s; �� Accuracy: ± (1% reading+2 words);
itinerary test
�� Measurement range: Depending on the selected sensor; �� Resolution: 0.1 mm; �� Accuracy: ± (1% reading+2 words);
DC power supply
�� Voltage regulation range: 30V~265V; �� Voltage regulation resolution: 1V; �� Accuracy:<1%; �� Stability:<1%;
�� Isolation from the mains electricity system; �� Maximum output current: 10A (instantaneous operation);
data unit
�� Time: milliseconds (ms); �� Speed: meters per second (m/s); �� Travel: millimeters (mm); �� Current: Ampere (A);

PCI intelligent switch mechanical characteristic tester

[measuring equipment]GKC-F Switch Mechanical Characteristics Tester

2026-6-18 15:28:28

1. LCD display: waveform analysis
2. Time testing range: 1~499.9ms
3. Speed test range: 15m/s
4. Travel test range: unlimited resolution: 0.01mm
5. Selection range of DC power supply: 25-265V/10A

GKC-F switch mechanical characteristic tester testing function
(1) Closing (opening) sequence
(2) Maximum time for closing (opening) the switch
(3) Three phases in different periods
(4) Same phase, different periods
(5) Closing (opening) time
(6) Action time
(7) Bounce time
(8) Bounce frequency
(9) Bounce amplitude
(10) Travel itinerary
(11) Open distance (12) overtravel
(13) Passing the itinerary
(14) Just closed (split) speed
(15) Maximum speed
(16) Average speed
(17) Short term gold
(18) No flow time
(19) Current waveform curve (dynamic)
(20) Time travel speed dynamic curve (ms)
(21) Time speed travel dynamic curve (mm)
Time units are all in ms, speed m/s, distance mm

Technical specifications of GKC-F switch mechanical characteristic tester
Environmental group: Belongs to Group V instruments in GB6587.1-1986 "General Principles for Environmental Testing of Electronic Measuring Instruments"
Type: Portable Packaging: Aluminum Alloy Box
Host: 440 × 300 × 150 (mm) 5 (kg)
Attachment: 440 × 300 × 80 (mm) 3 (kg)
Working power supply: AC220V ± 10% Frequency: 50Hz ± 5%
Environmental temperature: -10 ° C~40 ° C Relative humidity: �� 85%
Insulation resistance: �� 2M ��
Dielectric strength: The power supply incoming line can withstand a withstand voltage test of 1.5KV for 1 minute on the casing.
Time testing range: 1~499.9ms Resolution: 0.01ms Accuracy �� 0.1ms
Speed test range: 15m/s Resolution: 0.01m/s Accuracy ± 1% Reading+2 words
Travel test range: unlimited resolution: 0.01mm accuracy ± 1% reading+2 words
DC power supply selection range: 25-265V/10A Resolution: 1V Accuracy ��± 1%