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ZEC-802 three-phase relay protection tester

    Small volume, light weight, full function, easy to carry; New high fidelity linear amplifier; Independent dc power output; Perfect self-protection function;

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Product Introduction

1。 High performance industrial control computer

This device adopts high performance industrial computer as control microcomputer, direct running Windows operating system, device panel with a 6。4 "TFT color LCD monitor, trackball, and optimize the keyboard, without external mouse or keyboard can be used directly。 The device is equipped with USB port, 10-100m network port, serial communication port, etc。, which can easily carry out data access, data communication and software upgrade。

The whole process of the test and the test results are shown on the LCD display, the full set of Chinese character operation interface, clear and bright, intuitive and convenient。 Operation control is carried out by trackball and panel keyboard。 Easy to operate, simple computer knowledge, easy to master。

2. Dedicated dc power output

The device is equipped with a special adjustable dc power output, which can be used as a field test auxiliary power supply. The rated working current of the power supply is 1.5a, which can be used as the dc working power of the protective device, as well as the power of the jumper circuit. If the power supply is overloaded or short-circuited, the corresponding insurance (2A / 250V) will be burnt.

3. Digital signal processor microcomputer

The device adopts the high speed digital control processor as the output core, and the 32-bit double-precision algorithm is applied to produce the high-precision waveform of each phase。 Because of the integrated structure, the parts are closely combined, the data transmission is short and the structure is compact。 The problem of short output waveform points caused by long and narrow band of data communication lines is overcome in the direct control of notebook computer。

4.D/A conversion and low pass filtering

High precision D/A converter is used to ensure the accuracy and linearity of current and voltage across the whole range。

Due to the high density of fitting points and high fidelity of waveform, harmonic component is small, the requirement of low pass filter is very low, which has good transient characteristics and phase frequency characteristics, the amplitude frequency characteristics, easy to realize accurate phase shift, harmonic superposition, high frequency can assure very high precision.

5。 Voltage, current amplifier

Has been sticking to adopt high performance linear amplifier output phase current, voltage, current, voltage source can output directly from dc to contain various frequency components of waveform, such as the combination of square wave, every harmonic superposition waveform, fault transient waveform, etc。, and the output waveform is clean and smooth, the adjacent equipment without interference, high frequency radiation can better simulate all kinds of short circuit fault current, voltage characteristics。

The power amplifier circuit adopts high - power high fidelity module power device for power output level, which combines with careful and reasonable design of heat dissipation structure with sufficient power redundancy and heat capacity。 The amplifier circuit has complete overheat, overcurrent, overpressure and short circuit protection。 When the current circuit appears overcurrent, when the voltage circuit is overloaded or short-circuited, the output power is automatically restricted, the whole amplifier circuit is shut off, and the alarm signal is displayed。 In order to prevent the large current from running down the power amplifier circuit overheating, the device set up a large current software limit。 When the current exceeds 10A, the software will be activated when the current exceeds 10A。 When the time is limited, the software will automatically turn off the power output and give warning instructions。 The larger the output current, the shorter the time limit。

6。 Dedicated dc power output

The device is equipped with a special adjustable dc power output, which can be used as a field test auxiliary power supply. The rated working current of the power supply is 1.5a, which can be used as the dc working power of the protective device, as well as the power of the jumper circuit. If the power supply is overloaded or short-circuited, the corresponding insurance (2A / 250V) will be burnt.

Product Parameters

Product Characteristics

.       Flexible combination of voltage current output: with standard 4 phase voltage 3 phase current output, various combination outputs can be conveniently carried out for various types of protection tests。 Each phase voltage can output 120V, current 3 and output 120A。 Phase 4 voltage Ux is multi-function voltage, which can be set as 4 kinds of 3U0 or the same time voltage, or any voltage value。

2. Simple operation: the device panel has a trackball mouse, an optimized keyboard and a large screen TFT liquid crystal display, with built-in Chinese Windows platform operating software. It is easy to operate and easy to operate.

3. Dual-operation mode: in addition to single operation, the device can be operated by external laptop or desktop, and the two functions are completely consistent, and the two operation mode is truly complete.

4. New high fidelity linear amplifier: the output end has always adhered to the high fidelity and high reliability module linear amplifier, not the switch type amplifier, the performance is excellent. It will not produce high or medium frequency interference on the test site, and ensure that the waveform of the whole process from large current to small current is good.

5. High performance host: the output part adopts DSP control, fast operation speed, strong real-time digital signal processing power, bandwidth of transmission band and control of high resolution D/A conversion. The output waveform is high and the distortion is small and linear. Using a large amount of materials, advanced technology and precision components and the structure of professional design, thus device is small in size, light weight, complete functions, easy to carry and boot can work, flow test is very convenient.

6. Software powerful: can complete all kinds of high degree of automation of large complex calibration work, can easily test and scanning, protection setting various fault playback, real-time storage test data, show that the vector diagram, online printing report, etc.

7. Independent dc power output: the device is equipped with 110V and 220V special adjustable dc power output. The contact is rich with 8 contact inputs and 4 empty contact outputs. The input contact is an empty contact and 0-250v potential contact, which can be automatically recognized.

8. Complete interface: the device panel has its own keyboard and mouse, which can operate on a single machine, and can be operated with keyboard and mouse interface external keyboard and mouse; It also has two USB ports and RS232 ports to communicate with computers and other external devices.

9。 The perfect self-protection function: heat dissipation structure design is reasonable, reliable hardware protection measures, with functions of power supply soft start, software of fault diagnosis, and the output latch, and other functions。

10. Light small and high integrated single machine and integration structure: a large number of ultra-light small structure with high technology design is adopted, making the whole machine extremely small and portable.

 

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