We are specialized in manufacturing different kinds of HV test equipment, such as DC HV generators, impulse voltage generators, impulse current generators, combination wave generator, PD free AC test systems, AC resonant systems, cable testing systems, control and measurement systems, etc.
Partial discharge detector is suitable for the online partial discharge measurement of electrical apparatus, such as surge arresters, insulators, power transformers, generators, CT/VT, GIS, capacitors, power cables and switchgears. There are 3 models,JXFE-2003, JXFD-2010 and JXFD-2010S.
Technical Data of JXFD-2010S
1) Measuring Channels: 4 Channels;
2) The capacitance range of the test object 6pF--250μF;
3) Test precision: 0.1pC;
4) Sample precision: 12bit;Sample Rate : 20M/S;
5) Time window: You can select the phase dynamically, amplify the time window dynamically.
6) Filter frequency band:
(a) On low frequency 3dB, fL: 10, 20, 40 KHz optional;
(b) On high frequency 3dB, fH: 80, 200, 300 KHz optional, fL and fH can be freely combined to form any filter band .
7) Data store and display. It can print and generate standard test report.
8) AC220V, Frequency 50Hz, Power 300W.
This series of 3 phase regulating transformer is applicable for the testing of transformers or motors upto 10kV. Induced regulating transformer is developed for the no-load, on-load test of transformers.
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This series of regulating transformer can regulate the output voltage steplessly, smoothly and continuously on load. As it has low impedance voltage and low waveform distortion ratio, it is widely used as the power source for the testing of motors, transformers and switchgears. In addition, it can also be used as one component of rectifier device, DC speed adjustment, communication device and medical instrument.
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The thermal stability tester is applicable for the thermal stability test of SPDs. It is for indoor operation. One DC power source with a constant current between 2mA ~5A is applied on the SPD. The current through the SPD and the surface temperature of the SPD are continuously monitored to check if it reaches thermal equilibrium, and the disconnectors act.
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The thermal stability tester is applicable for the thermal stability test of SPDs. It is for indoor operation. One frequency AC power source with a constant current between 2mA ~5A is applied on the SPD. The current through the SPD and the surface temperature of the SPD are continuously monitored to check if it reaches thermal equilibrium, and the disconnectors act.
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The C type impulse current test systems with crowbar are sophisticatedly designed to generate impulse current of exponential shapes. The system can be designed in various ways for meeting customers’ requirements. The test system is applicable in testing of SPD, lightning protection components (MOV or air gap), lightning rod and aircraft device.
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Steep waveform generator units are used to generate the steep wave front waveform. They comprises of one steep waveform generator gap unit and resistive voltage divider.
The gap unit consists of sphere gaps, transmission gear, capacitors and corona rings, which are mounted on the rectangular metal base.
The SXJB multiple chopping gap can be used for chopping of lightning impulse voltages between 20 kV and 3600 kV. The chopping can be realized at the front or at the tail of the impulse.
Surge generator (combination wave generator) can be used to generate impulse of exponential shapes to perform high energy surge tests. The system can output 8/20μs, 10/350μs, 10/700μs, 5/300μs according to the customer's requirement.
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Partial discharge detector is suitable for the online partial discharge measurement of electrical apparatus, such as surge arresters, insulators, power transformers, generators, CT/VT, GIS, capacitors, power cables and switchgears.
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Partial discharge detector is suitable for the online partial discharge measurement of electrical apparatus, such as surge arresters, insulators, power transformers, generators, CT/VT, GIS, capacitors, power cables and switchgears. There are 3 models,JXFE-2003, JXFD-2010 and JXFD-2016.
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Loop resistance testing meter is suitable for the contact resistance measurement of HV switchgears and circuit breakers. It can also measure the primary resistance of the current transformers.
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JYH-B instrument transformer characteristic tester can measure the turns ratio, polarity and volt-ampere characteristics of the current transformers and voltage transformers. It has large power regulating transformer, step-up transformer and current-up device inside. The tester is widely used in the routine test of voltage and current transformers.
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YY6611 oil dielectric tester is applicable for the oil dielectric test for the insulating liquids (oil) in transformers, reactors, bushings, switchgears and capacitors. The test device adopts perfect EMC design, which avoids the crash fault during test.
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YR-20W type DC resistance meter is applicable to measure the DC resistance of power and distribution transformers, current transformers upto 35kV. It can also be used during temperature rise test. It is especially designed for the transformers whose resistances of HV winding and LV windings have a big difference.
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YR type DC resistance test instrument is applicable to measure the DC resistance of power and distribution transformers, current transformers with high resistance values.
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YRD and YRE type transformer resistance test instrument is applicable to measure the DC resistance of power and distribution transformers, current transformers upto 240MVA. It can also be used during temperature rise test.
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YRC type DC resistance test instrument is applicable to measure the DC resistance of power and distribution transformers, current transformers with rated voltage upto 110kV.
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KRI9310 DC resistance tester is portable and automatic tester, which is applicable for the inductive test objects (such as distribution transformers, instrument transformers, reactors, etc) and the resistive test objects (such as contactors of switches, contactors of relays, wires, etc).
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YT-F transformer turns ration meter is suitable for the turns ratio measurement of power transformers upto 1000kV, current transformers, voltage transformers and Z type transformers.
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YT-A transformer turns ration meter is suitable for the turns ratio measurement of power transformers upto 1000kV, current transformers, voltage transformers and Z type transformers. It has L-N voltage measurement, great convenience for wiring connection, fast test speed and high accuracy.
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JXJS-10 automatic capacitance & tan delta tester has bridge, variable frequency converter, AC test transformer and standard capacitor inside. It has tunable frequency and anti-interference function.
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Wave shaping resistors for LI, SI and LIC of impulse voltage generators;
Wave shaping resistors for impulse current generators;
Charging resistors and protective resistors for AC test systems.
We can do custom made.
Surge generator (combination wave generator) can be used to generate impulse of exponential shapes to perform high energy surge tests. The system can output 8/20μs, 10/350μs, 10/700μs, 5/300μs according to the customer's requirement.
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Impulse capacitors are widely used as the power energy for the high voltage and high current devices, such as impulse current generator, impulse voltage generator, long duration impulse current generator, repetition impulse generator, oscillation circuit test system, pulse power, etc.
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Universal voltage divider can be used for measurement of AC voltage, DC voltage ,lightning impulse and switching impulse.
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AC voltage divider is capacitive voltage divider for AC measurement.
It can also be used as coupling capacitor for partial discharge measurement.
DC voltage divider is a resistive voltage divider for the measurement of HVDC power source or DC transmission.
Impulse voltage divider is used to measure high voltage full and tail chopped lightning and full switching impulses. Provided with an adequate additional secondary part, it can also be used for alternating voltage measurements.
It has wheels at the bottom for easy movement and corona rings at the top.
Voltage divider has the below different kinds:
1.impulse voltage divider for impulse measurement upto 4000kV;
2.resistive voltage divider for DC measurement;
3.capacitive voltage divider used for AC measurement;
4.capacitive and resistive voltage divider for AC and DC measurement
AC test transformer is applicable for the AC voltage withstand test and partial discharge test of different insulation materials and electrical apparatus. They are widely used in the electrical apparatus manufacturers, electric power department, research institute and universities. The possibility of stacking several transformers allows reaching very high voltages by keeping a reasonable floor space.
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We can manufacture different kinds of corona rings or shielded parts.
You are welcome to send us the drawings for a quotation.
We can do custome made.
The corona rings are used together with the surge arresters.
You are welcome to send us the drawings for a quotation.
We can do custome made.
The corona rings are used together with the insulators.
You are welcome to send us the drawings for a quotation.
We can do custome made.
DC generator is used to output DC at power frequency, 50Hz or 60Hz.
It can test the surge arresters and other insulation materials.
Combination wave generator can be used to generate impulse of exponential shapes to perform high energy surge tests. The system can output combination wave (open circuit voltage 1.2/50μs & short circuit current 8/20μs).
With additional impulse modules, it can output 10/350μs and 8/20μs.
SP type impulse current test system can generate 8/20μs or 10/350μs impulse current waveforms. The systems can be used to test SPD, lightning rod and other lightning protection devices.
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SA type impulse current generator can generate different types lightning impulse current shapes such as 4/10μs, 8/20μs, 1＜20μs, 30/80μs, 60/100μs , long duration current according to IEC 60099-4. Modifications can be applied according to the request of our customers.
This type of test system is especially to test the metal oxide surge arresters.
Variable frequency AC resonant test systems are mainly used for AC withstand voltage test of large capacitive test objects on site. The test objects include SF6 circuit breakers, GIS, power cables, tec.
With suitable tuning capacitor, the frequency range can be from 20Hz to 300Hz. The AC resonant test systems are applicable for partial discharge test of instrument transformers, coupling capacitors and metal oxide surge arresters with rated voltage under 1000kV.
Series Resonant Test Systems with variable inductance and module type are used for factory testing of medium and high voltage cables, power transformers, bushings, high voltage capacitors, generators, arresters and high voltage accessories. They include stackable modules that can be used to test a wide range of products. The systems can be expandable to cover future test requirements that may require higher voltage and power levels.
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AC resonant test system with variable inductance and metal tank type is used for factory testing of medium and high voltage cables, high voltage capacitors, generators, and motors. They use the resonance between the capacitive test object and the inductive HV reactor of the test system to generate a continuous sinusoidal high voltage.
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Impulse voltage generator can be used to generate impulse voltages simulating lightning impulse (1.2±30%/50±20%μs), chopped lightning impulse (chopped time between 2~6μs to test power transformers, instrument /voltage transformers and bushings), switching impulse (250±10%/2500±10% μs) and steep front waveforms (to test glass insulator, composite insulators or ceramic insulators) .
Learn moreSan Men Xian Shi Xuan Electric Co., Ltd (HVGrand is our logo) is a professional provider of high voltage test facilities and test solutions for the testing of MV & HV electrical products, such as insulators, bushings, transformers, cables, surge arresters, SPD, switchgears, disconnectors, etc. Our factory covers an area of 6000 square meters, we have 45 staff with professional staff and senior engineers included.
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