Three-Phase/Six-Phase Microcomputer Relay Protection Tester
ULWJ-802/A/B and ULWJ-1200/A/B series three-phase orsix-phase relay protection tester is a new type of microcomputer relay protection tester developed by Wuhan Ulike Electric Power Equipment Co., Ltd. in accordance with the standard DL/T624-1997 "Technical Conditions for Microcomputer Relay Protection Test Devices", widely listening to user opinions, summarizing the advantages and disadvantages of similar domestic products, and using modern microelectronic technology and devices. The microcomputer relay protection tester adopts a standalone operation mode, and can also be connected to a laptop for operation. The instrument adopts DSP+FPGA structure, true 16-bit DAC output, built-in new modular high-fidelity linear high-power amplifier, 8.4-inch TFT true color display with resolution of 800×600, and high-end industrial keyboard and mouse. WindowsXP operating system, powerful functions. Small size, high precision. This microcomputer relay protection tester not only has the superior performance and advanced functions of large testers, but also has the advantages of simple operation and high reliability of small testers, with high cost performance. It is a handy tool for relay protection workers.
ULWJ-802/A/Bthree-phase relay protection tester has standard four-phase voltage and three-phase current output, AC voltage 125V/phase, AC current 40A/phase. Three-phase parallel can reach 120A. ULWJ-1200/A/Bsix-phase relay protection tester has standard six-phase voltage and six-phase current output, voltage 125V/phase, current 30A/phase. Six-phase parallel can reach 180A. It can test various traditional relays and protection devices, as well as various modern microcomputer protections. The six-phase microcomputer relay protection tester is an ideal instrument for testing transformer differential protection and standby power supply automatic switching devices.
Model
Industrial control microcomputer type (ULWJ-802/ULWJ-802A/ULWJ-802B) three-phase relay protection tester
Industrial control microcomputer type (ULWJ-1200, ULWJ1200A) six-phase relay protection tester
Single-chip type (ULDJ-600) single-phase relay protection tester
Standard
GB7261-2008, DL/T624-2010, DL/T1153-2012
Alias
Three-phase microcomputer relay protection tester, six-phase microcomputer relay protection tester, three-phase relay protection tester, six-phase relay protection tester, three-phase relay protection tester, six-phase relay protection tester, microcomputer relay protection tester, relay protection tester, relay protection tester
Test Items for Relay Protection Devices
According to the "Calibration Specification for Relay Protection Test Devices" and "Technical Conditions for Microcomputer Relay Protection Test Devices" issued by the State Grid, the calibration contents for relays and relay protection devices include:
1. Accuracy test of amplitude, phase, and frequency of AC current and voltage
2. Amplitude accuracy test of DC current and voltage
3. Amplitude-frequency characteristic test of AC current and voltage
4. Distortion rate test of AC current and voltage
5. DC component test of AC current and voltage
6. Ripple test of DC current and voltage
7. Harmonic test of AC current and voltage
8. Response time test of AC/DC current and voltage
9. Synchronization test of AC current and voltage
10. Load capacity test of AC/DC current and voltage
11. Closing angle accuracy test
12. Millisecond meter accuracy test
13. Consistency test of binary input quantities


