Shanghai Guantu Technology Co., Ltd.
Shanghai Guantu Electric Technology Co., Ltd. was established in 2004. Since its establishment, the company has focused on the research, development, production and sales of power pulse technology, equipment and power supplies. Its goal is to provide professional solutions for high-voltage and high-current test power supplies.
- (+86) 021 34695500
- +86-21-34690035
- hvsales@grandtop.cn
- Building 1, No. 1111, Jindu Road, Minhang District
Shanghai Floor 1-2, Building 7, No. 333, Haiyang 1st Road
Nanhui New Town, Pudong New Area, Shanghai
China
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product
H-Type Surge Generator
Shanghai Guantu Technology Co., Ltd.
Features of H-type surge generator1. LCD screen display, built-in computer control, man-machine dialogue, easy to operate.2. Program-controlled high-voltage power supply, high voltage stability and precision3. Imported non-inductive high-power resistors are used to ensure the consistency of surge waveforms4. The main switch adopts electronic switch discharge mode, and the output polarity is automatically switched
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AC & DC Aging Test Equipment for Arrester Valve Plate
Shanghai Guantu Technology Co., Ltd.
The arrester is usually connected between the live wire and the ground, and is connected in parallel with the protected equipment. When the overvoltage value reaches the specified operating voltage, the arrester will act immediately, flow the charge, limit the overvoltage amplitude, and protect the insulation of the equipment; when the voltage value is normal, the arrester will quickly return to its original state to ensure the normal power supply of the system.
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AC & DC Action Load Test
Shanghai Guantu Technology Co., Ltd.
1. AC action load power supplyVoltage range: 0~1000V;Current range: 5A ~ 100A.2. DC action load power supplyVoltage range: 0~1500V;Current range: 5A ~ 100A.
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Inrush Current Generators for Zno Production Line
Shanghai Guantu Technology Co., Ltd.
Inrush Current Generator Standard: IEC61008, IEC61009, I61051/61643, ANSI C62.31, C62.33, C62.35, TU K20, K21, K44, K45, UL943Inrush Current Generator Features1. LCD screen display, built-in computer control, man-machine dialogue, easy to operate.2. Program-controlled high-voltage power supply, high voltage stability and precision3. Imported non-inductive high-power resistors are used to ensure the consistency of surge waveforms4. The main switch adopts electronic switch discharge mode, and the output polarity is automatically switched
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SPD AC & DC Thermal Stability Test Equipment
Shanghai Guantu Technology Co., Ltd.
1. Computer control measurement, PLC control;2. Equipped with sudden voltage capability, suitable for thermal stability tripping test under high current conditions;3. Increase the high-power resistance box;4. The interface is friendly and beautiful, and can reflect the running status of the system in real time; .5. Automatically draw voltage, current and temperature curves;6. The system performs multi-point temperature detection in real time;7. Timing sampling and recording function, which is convenient for users to view temperature values at different times and compare data;8.2 times Uc leakage current test function to check the tripping reliability of the product;9. Built-in test box;10. RS232 communication interface, can realize remote control.
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C-Type Surge Generator
Shanghai Guantu Technology Co., Ltd.
Surge generator is an electronic measuring instrument used in the fields of information science and system science, electronics and communication technology.
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AC Test Transformer
Shanghai Guantu Technology Co., Ltd.
How the AC test transformer prevents the overvoltage generated by the frequency conversion series resonance test device is a relatively simple problem, but the overvoltage caused by voltage fluctuation is difficult to appear when the overvoltage protection is set. Generally, the overvoltage of the frequency conversion series resonance test device will appear in the frequency sweep stage of the instrument, that is, in the process of finding the resonance point. Those who have used it know that in the process of finding the resonance point of the frequency conversion series resonance test device, the voltage and frequency have a parabola-like linear relationship. By default, the system finds the high voltage, that is, the apex of the parabola as the resonance point.
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Combination Wave Generator
Shanghai Guantu Technology Co., Ltd.
GCW series combined wave generators can generate high energy surges for combined wave testing. It has the characteristics of fast rise and long pulse duration. According to different modulation components, different surge waveforms can be generated; the control system can automatically record and analyze the above surge waveforms. standard:IEC60060-4-5, IEC61643-11, UL1449-2006, GB18802.1, GB/T18802.21,
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D-Type Surge Generator
Shanghai Guantu Technology Co., Ltd.
Meet and exceed the new standards of IEC61000-4-5 and GB/T17626.5;Chinese and English switching, programmable operation, easy to use;7.0 color touch screen display, more convenient operation;Imported program-controlled high-voltage power supply with stable performance;Built-in ambient temperature and humidity display;The surge test mode is automatically switched in all gears, without manual operation;Built-in level parameters, positive and negative automatic switching, easy to operate;Built-in RS232 interface, convenient for product upgrades, optional measurement and control software for remote control.
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Lightning Current Generator
Shanghai Guantu Technology Co., Ltd.
The lightning wave impulse current generator is an impulse current generator that generates a simulated lightning current waveform . Its working process is as follows: first, the transformer charges the capacitor bank through the silicon pile, when the charging voltage reaches a predetermined value, the spark gap is triggered, and the capacitor is discharged through the total inductance and total resistance of the circuit. When the resistance is greater than or equal to the critical damping value, a unidirectional impulse current wave is generated in the circuit. When the resistance is less than the critical damping value, an oscillating impulse current wave is generated. The magnitude of the impact current amplitude is related to the circuit parameters. When the capacitance value and charging voltage are the same, the smaller the inductance value, the greater the current amplitude. In order to obtain as much current as possible, a pulse capacitor with a small inductance value is usually selected, and the total length of the connecting line should be as short as possible when arranging the main capacitor, so that the total loop inductance value can be reduced as much as possible.
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S-Type Surge Generator
Shanghai Guantu Technology Co., Ltd.
It has the advantages of small size, good reliability, good surge waveform, stable performance, convenient use, continuously adjustable surge voltage, etc.
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Short Circuit Test System
Shanghai Guantu Technology Co., Ltd.
The short-circuit test system refers to what kind of short-circuit test is carried out by which equipment, and how long is the test time. But I have one thing to tell you, the short circuit test is a kind of destructive test, mainly to test the working condition of the used equipment in a crisis situation, or to test how strong the anti-destructive ability of the used equipment is. Just like a lot of equipment in the military must undergo a short-circuit test, some for 3 minutes or longer, in order to resist breaking calls against the enemy during wartime.
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Pulse Current Generator Multi-Pulse Generator
Shanghai Guantu Technology Co., Ltd.
What is the difference between ordinary current and pulse current?The difference between ordinary current and pulse current: ordinary current is continuous and uninterrupted current.Pulse current is a current whose direction does not change and whose intensity changes periodically with time.
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SPD High, Medium, and Low Voltage TOV Test Equipment
Shanghai Guantu Technology Co., Ltd.
The high (medium) voltage TOV tester is used for transient overvoltage tests caused by faults in high and medium voltage systems such as surge protectors (SPDs), and can also be used for other scientific research tests.standardGB/T 16927-1997 High voltage test technology.GB18802.1-2011 Surge protective device (SPD) for low-voltage power distribution system Part: Performance requirements and test methods.IEC61643-1:2005 (Surge protective devices connected to low-voltage power distribution systems part 1: Performance requirements and testing methods)TOV fault test equipment1. Three-phase isolation test transformer2. Single-phase test transformer3. Low voltage switchgear4. Power controller5. Test voltage and current measurement6. Sample box
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TOV Test System
Shanghai Guantu Technology Co., Ltd.
1. Safety protection: traffic light indication status, emergency stop and interlocking of the test product door2. Equipped with a computer, set the TOV power supply parameters through the software interface, and automatically test3. Equipped with alarm function, equipped with emergency brake switch, equipped with safety cover and door switch4. The computer interface displays real-time voltage and current data5. Automatically draw voltage and current waveforms, and can save the waveforms as BMP format pictures, which is convenient for editing experiment reports.6. Automatically record test time, test current, test voltage, etc., and save the recorded data to files7. Installation method: cabinet installation.
