TLHG-702 Microcomputer Relay Protection Tester
Product Aliases
Three-phaserelay protection tester, three-phase relay protection, relay calibration instrument, relay tester, microcomputer relay protection test system, relay protection device
Product Introduction:
TLHG-702 Microcomputerrelay protection tester canautomatically scan the ratio braking curves of microcomputer and digital transformer and generator-transformer unit differential protection, and is an important test tool to ensure the safe and reliable operation of the power system. TLHG-702 can test various types of relays such as voltage, current, frequency, power, impedance, harmonic, differential, and synchronism relays manually or automatically, and can simulate various fault types for distance and zero-sequence protection device calibration and complete group tests of protection devices.
Product Features:
1.Intelligent host: The host uses a high-speed high-performance digital signal processor, with fast operation speed, wide transmission bandwidth, and software uses double-precision algorithms to generate high-precision waveforms of each phase arbitrarily. Due to the integrated structure, the parts are tightly combined, the data transmission distance is short, and the structure is compact.
2. Standalone operation: Operated by a convenient and flexible rotary mouse through a large-screen LCD display, with full Chinese display, it can complete most on-site test and verification work.
3、Connected to computer operation: Through the full Chinese operation software on the Windows platform, it can perform various large-scale complex and more automated calibration work, conveniently test and scan various protection settings, store test data in real-time, display vector diagrams, draw fault waveforms, and print reports online.
4、Large-screen LCD display: Uses a large-screen high-resolution graphic LCD display, all operation processes are set on the display, and the operation interface and test results are displayed in Chinese, with intuitive and clear display.
5、"Foolproof" operation: This microcomputer relay tester uses an advanced rotary mouse, greatly simplifying the structure of the operation part, making operation simple, fast, and easy to master.
7、New high-fidelity power amplifier: The output stage uses a new type of high-power modular high-fidelity power amplifier component, which can be used for both current output and voltage output, with large output power, good accuracy, and high reliability.
8、Direct current and voltage output: Phase voltage and phase current use DC-type power amplifier output mode, which can directly output AC voltage, AC current, DC voltage, and DC current, and can change angle and frequency, and can superimpose 1-20 harmonics.
9、Self-protection: Adopts a reasonably designed heat dissipation structure, and has reliable and complete multiple protection measures and power soft start, as well as certain fault self-diagnosis and blocking functions.
10、Has independent dedicated DC power output: The device is equipped with a 110V and 220V dedicated adjustable DC power output.
11、Rich contacts: This TLHG-702 has 7 contact inputs and 2 empty contact outputs. The input contacts are compatible with empty contacts and 0-250V potential contacts, and can be intelligently and automatically identified.
12、Integrated single-unit structure: This protection tester works with AC 220V power supply. It is small in size, light in weight, easy to carry, and convenient for mobile testing.
13、High cost performance: It is a cross-professional joint design product that integrates advanced scientific and technological achievements of multiple specialties. It has the performance of large-scale testers and the price of small testers, with high performance-price ratio.
Product Parameters
Relay protection tester product parameters
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Current Output |
AC |
Phase current output (RMS) Three-phase parallel current output (RMS) Phase current long-term allowable working value (RMS) Maximum output power of phase current Maximum output power when three-phase parallel current is at maximum output Allowable working time when three-phase parallel current is at maximum output Frequency range (fundamental) Harmonic order |
0-40A 0-120A 10A / per phase 450VA 900VA 10s 20-1000Hz 1-20 times |
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DC |
Phase current output Maximum output load voltage |
0-±10A 20V |
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Voltage Output |
AC |
Phase voltage output (RMS) Line voltage output (RMS) Phase voltage / line voltage output power Frequency range (fundamental) Harmonic order |
0-120V 0-240V 80VA / 100VA 20-1000Hz 1-20 times |
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DC |
Phase voltage output amplitude Line voltage output amplitude Phase voltage / line voltage output power |
0-±160V 0-±320V 70VA / 140VA |
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Switching value input |
7 pairs Empty contact 1-20mA, 24V Potential contact input "0": 0 - +6V; "1": +11v - +250V |
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Switching value output |
8 channels Empty contact DC: 220V／0.2A; AC: 220V／0.5A |
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Time measurement |
Measurement range 0.1ms - 9999s |
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Power supply voltage |
Allowable range
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