Product Details

Industrial PC Three-Phase Relay Protection Tester Instrument Features:

1. Embedded host, equipped with ultra-large-scale programmable logic device (CPLD)

The host adopts a high-speed high-performance embedded microcomputer system equipped with CPLD, with fast response speed, wide transmission bandwidth, and can generate a high-density fitted sine wave of 500 points per cycle for the fundamental wave. The output waveform is smooth with no harmonic components. Due to the large number of output points and precise filtering circuits, the waveform distortion is extremely small.
Even for the 9th harmonic at 450Hz, a high density of 55 points per cycle can be achieved during harmonic output. The software has strong human-machine dialogue and online help functions, allowing control over any test parameter.

2. Single machine with 12-channel D/A simultaneous output

Using a 16-bit high-precision DAC chip, ensuring high waveform fitting accuracy and good linearity. It can output 12 analog signals simultaneously, meeting the testing needs for transformer protection, standby power supply automatic switching, and other special tests.

3. High-precision linear power amplifier, simultaneously outputting 6-phase voltage and 6-phase current

The carefully designed voltage and current amplifiers achieve AC/DC sharing, and the output stage uses a unique high-precision ultra-linear amplification technology. With high accuracy and good reliability, it can simultaneously output 6-phase AC voltage and 6-phase AC current, with each phase AC voltage output up to 130V, 70VA, and AC current full parallel output up to 180A.
DC voltage output can reach 300V, 130VA.

4. Large-screen LCD, complete interfaces, integrated single-unit structure

This machine uses a 640×480 dot matrix 8.0'' large-screen high-resolution graphic LCD display. The operation interface and test results are all displayed in Chinese, and all operation processes are set on the display screen, making the display intuitive and clear.

The device can be operated with its own keyboard, and also provides external keyboard/mouse ports. It also provides 2 USB ports and 2 RS232 ports for communication with external computers and other devices. It only needs AC 220V power supply and can work immediately after power-on. It is easy to carry and very suitable for mobile testing and field work.

5. Auxiliary DC source (optional)

This machine can be optionally equipped with two independent DC power supplies, one group 110VDC/1.0A, the other group 220VDC/0.6A, which automatically output simultaneously at power-on and can be used as protection power supply without software settings or adjustments.

6. Intelligent self-protection

Adopting a newly designed heat dissipation structure to ensure ventilation. It can simultaneously judge overcurrent, overvoltage, overload, short circuit, excessive temperature, abnormal data, and other phenomena that endanger the device itself. Even operational errors will not damage the device. In addition, when dangerous signals such as external voltage enter the tester through terminals,
the device's alarm indicator light turns red and automatically cuts off the power amplifier.

7. Rich contacts and powerful software functions

This device has eight switch quantity inputs (A B C R a b c r) and 4 switch quantity outputs. The input contacts are compatible with both dry contacts and 0-250V potential contacts, and can be intelligently identified. The device is operated through 23 keys on the panel via the large-screen LCD display, and all interfaces are displayed in Chinese.
It can complete the verification work of most on-site tests.

The device can be placed either vertically or horizontally, can be operated offline, or can be connected to an external PC for operation. Test results can be automatically organized and recorded into test reports for future reference, and can also be directly saved using a U disk and conveniently transferred to an external PC for editing, printing, and other processing. Software upgrades are simple and fast, directly through U disk upgrade or external
PC download, without any hardware changes.

The software has powerful auxiliary calculation functions, automatically calculating positive, negative, and zero sequence voltage and current, primary and secondary active power, reactive power, and power factor.

The 6-phase voltage and 6-phase current outputs can be used for dual-group tests of standby power supply automatic switching and transformer three-phase differential tests, with very simple wiring.

 Industrial PC Three-Phase Relay Protection Tester Instrument Applications:

1. Testing of all individual components in secondary dispatching (current, voltage, time, differential, balance, negative sequence, distance, power direction, inverse time, frequency, synchronization, reclosing relays, etc.).

2. Complete group transmission, able to simulate various simple or complex transient, permanent, and converting faults, and can superimpose transient DC components on the fundamental wave.

3. Can arbitrarily superimpose various harmonics, with online controllable initial angle and content.

4. Can output different frequency AC quantities per phase, dual-use AC/DC.

5. Dedicated low-frequency unit for convenient testing of microcomputer low-frequency and low-voltage load shedding protection.

6. Automatic scanning of various protection time characteristics. Scanning of power and impedance protection characteristic curves.

7. Automatic testing of differential ratio and harmonic braking characteristics of microcomputer main transformer protection.

8. Automatic testing of complete distance, zero sequence, and overcurrent protection.

9. User-programmable test units to meet special test purposes, such as testing of standby power supply automatic switching devices.

10. Testing of various protections such as motor loss of excitation, loss of step, reverse power, and synchronization.

 Technical Parameters:

1. AC voltage output: 0~250V continuously adjustable, maximum output capacity 1000VA

2. AC current output: 0~20A, 0~100A continuously adjustable; at 0~20A, open circuit voltage 5V; at 0~100A, open circuit voltage 10V

3. DC voltage output: 0~300V continuously adjustable, maximum 3A

4. DC current output: 0~200mA, 0~5A continuously adjustable; at 0~200mA, open circuit voltage 48V; at 0~5A, open circuit voltage 24V

5. Digital millisecond meter: maximum range: 100 seconds; resolution: 0.001 seconds; accuracy: 0.01% ± 2 digits

6. Overall measurement accuracy: 0.5 level

7. Dimensions: 420×310×160; 8. Weight: 16kg

 Precautions:

1. The tester device has a built-in industrial PC and Windows operating system. Please do not frequently switch the host power on and off.

2. The device panel or back panel is equipped with USB ports, allowing hot-plugging of USB devices (such as U disks), but be sure to do so after data transfer is complete.

3. The device is equipped with a dedicated self-restoring CF card to avoid damage to the operating system caused by illegal shutdown, deletion or modification of files on the hard disk, or desktop icons. If you really need to store data on this machine, please store it on the D drive. When using a USB disk to copy data, ensure the U disk is clean and virus-free, and do not use the U disk to install other software programs in this system.

4. When connecting an external keyboard or mouse, do not plug into the wrong port, otherwise the Windows operating system will not start normally.

5. Do not directly turn off the power in the output state to avoid protection misoperation due to incorrect output at shutdown.

6. The input contacts are compatible with dry contacts and potential (0~250VDC). When using live contacts, the high potential (positive) of the contact should be connected to the common terminal COM.

7. When using this instrument, do not block or seal the ventilation openings of the device. Generally, place the instrument upright or open the support feet to tilt it slightly.

8. It is forbidden to introduce external AC/DC power into the voltage and current output jacks of the tester. Otherwise, the tester will be damaged.

9. If the on-site interference is strong or safety requirements are high, before testing, reliably ground the ground terminal of the power cord (3-core) or the device grounding hole.

10. If interface data errors or device connection failures occur during use, you can solve it by: pressing the reset button downward to reset the DSP; or exit the running program to return to the main menu and rerun the program, then all interface data will be restored to default values.

Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.