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Portable Three‑Phase Microcomputer Relay Protection Tester Secondary Injection Test Set for Substation Relay Commissioning
| Place of Origin | China Mainland |
|---|---|
| Brand Name | MINGYANG |
| Model Number | MY-S30 |
| Minimum Order Quantity | 1 |
| Price | 6000usd |
| Packaging Details | carton |
| Delivery Time | 1 week |
| Payment Terms | L/C,D/A,D/P,T/T,Western Union |
| Supply Ability | 1000pcs/month |
Product Details
| Type | Hardness Tester | Voltage | Other |
|---|---|---|---|
| Warranty | 2 Years | Power | 220w |
| Place Of Origin | Hubei, China | Test Voltage | 110V (1A) -220V (0.6A) |
| Accuracy Class | High Accuracy | Protection Class | IP55 |
| Customized Support | OEM, ODM, OBM | Accuracy | ±5% |
| Maximum Output Power Per Phase | 300VA | Size | 310mm *220mm* 110mm |
| Harmonic Frequency | 2-20 Times | Frequency Range | 0-1000Hz |
| Phase | 0-360 ° | ||
| Highlight | High Accuracy Protection Relay Test Kit,300VA Output Power Secondary Current Injection Tester,IP55 Protection Relay Protective Tester |
||
Product Description
Portable Three‑Phase Microcomputer Relay Protection Tester Secondary Injection Test Set for Substation Relay Commissioning
Product Description
This instrument has standard four phase voltage and three‑phase current output, which can be used to test various traditional relays and protection devices, as well as modern microcomputer protection. Especially for transformer differential protection and backup automatic switching devices, the testing is more convenient.Product Alias
relay protection tester / microcomputer relay protection tester / 3‑phase relay protection tester / secondary injection test set / protective relay calibrator / substation relay commissioning tester / relay test kit / power system relay test equipmentfeatures
1. Meet the requirements of on-site testing. This instrument has standard four phase voltage and three-phase current output, which can be used to test various traditional relays and protection devices, as well as modern microcomputer protection. Especially for transformer differential protection and backup automatic switching devices, the testing is more convenient.
2. Meet the national standard GB/T 7261-2016 "Basic Test Methods for Relay Protection and Safety Automatic Devices" and the standard DL/T 624-2010 "Technical Conditions for Microcomputer-based Test Devices for Relay Protection".
3. WinXP operating interface, user-friendly human-machine interface, easy and fast operation; The embedded industrial control computer and 10.4-inch LED true color display screen with a resolution of 800 × 600 can provide rich and intuitive information, including the current working status of the device and various help information.
4. The local WinXP system comes with a recovery function to avoid system crashes caused by illegal shutdowns or accidental operations.
5. Equipped with ultra-thin multifunctional quick connect buttons and an optical mouse, it can complete various operations through the keyboard or mouse like operating a regular PC.
6. The main control board adopts a DSP+FPGA structure, with 16 bit DAC output. It can generate high-density sine waves of 2000 points per week for the fundamental wave, greatly improving the quality of the waveform and enhancing the accuracy of the testing instrument.
7. The power amplifier adopts a high fidelity linear power amplifier, which ensures both the accuracy of small currents and the stability of large currents.
8. It uses a USB interface to communicate directly with the PC without the need for an adapter, making it convenient to use.
9. Can be connected to a laptop (optional) for operation. Laptops and industrial computers use the same set of software, without the need to relearn operating methods.
10. Equipped with GPS synchronization test function. The device can be equipped with a built-in GPS synchronization card (optional) that is connected to a PC through an RS232 port, enabling two testers to perform synchronous switching tests in different locations.
11. Equipped with an independent dedicated DC auxiliary voltage source output, with output voltages of 110V (1A) and 220V (0.6A) respectively. To be used for relays or protective devices that require DC working power supply.
12. It has software self calibration function, avoiding the need to open the chassis and adjust the potentiometer to calibrate accuracy, thereby improving the stability of accuracy.
Product Parameters
AC Power Source (3 * 30A)
- Single phase current output: 0-30A/phase, accuracy: 0.1% ± 5mA
- Three phase parallel output: 0-90A (three phase same phase parallel)
- Long term allowable working value: 10A per phase
- Maximum output power: 300VA per phase
- Three-phase parallel current maximum power: 800VA
- Maximum triple current output working time: 5 seconds
- Frequency range: 0-1000Hz, accuracy: 0.001Hz
- Harmonic frequency: 2-20 times
- Phase control: 0-360°, accuracy: 0.1°
DC Current Source
- DC current output: 0-±10A/phase, accuracy: 0.2% ± 5mA
AC Voltage Source
- Single phase voltage output: 0-120V/phase, accuracy: 0.1% ± 5mV
- Line voltage output: 0-250V
- Phase voltage/line voltage output power: 75VA/100VA
- Frequency range: 0-1000Hz, accuracy: 0.001Hz
- Harmonic frequency: 2-20 times
- Phase control: 0-360°, accuracy: 0.1°
DC Voltage Source
- Single phase voltage output amplitude: 0-±160V, accuracy: 0.2% ± 5mV
- Line voltage output amplitude: 0-±320V
- Phase voltage/line voltage output power: 90VA/180VA
Switching Terminal
- Switching input terminals: 8 pairs
- Empty contact: 1-20mA, 24V internal active output
- Potential flipping: Passive contact (low resistance short circuit signal), Active contact (0-250V DC)
- Switching output terminals: 4 pairs, air contact
- Breaking capacity: 110V/2A, 220V/1A
Additional Specifications
- Time range: 1ms - 9999s, measurement accuracy: 1ms
- Unit dimensions: 310 * 220 * 110mm³
- Unit weight: Approximately 7.5kg
- Power supply: AC220V ±10% (47-63Hz); DC: 220V ±10%; 10A
AC Current Working Time
- 10A ≥ working current: >60 minutes
- 20A ≥ Working current ≥ 10A: >70 seconds
- 30A ≥ Working current ≥ 20A: >15 seconds
- Working current ≥ 30A: >5 seconds
| Output Voltages | 110V (1A) - 220V (0.6A) |
|---|---|
| Power Supply | AC220V ±10% |
| Current Source | AC/DC voltage source, AC/DC current source |
| Maximum Output Power per Phase | 300VA |
| DC Current Output | 0-±10A/phase, accuracy: 0.5% ±5mA |
| Line Voltage Output | 0-240V |
| Three-phase Parallel Output | 0-120A |
| Switching Input Terminal | 8 pairs |
| Time Range | 1ms - 9999s |
| Measurement Accuracy | 1ms |
Application Scenarios
FAQ
Question 1: No current and voltage output after test program starts
Customer: The test program runs normally on the screen, but there is no current or voltage output from the instrument terminals. What may cause this problem?
Manufacturer: This fault is quite common in field‑site testing. Please carry out step‑by‑step troubleshooting. First, check whether the test circuit wiring is reliable and confirm all test leads are firmly connected to corresponding output terminals. Second, use multimeter to check the continuity of current and voltage output loops. Besides, pay attention to parameter configuration: make sure output amplitude is not set to zero and output enable is activated. If over‑current or overload protection is triggered, the output will be cut off. It is suggested to restart the device and run the test again. If the problem persists after above checks, please contact us promptly and do not disassemble the instrument by yourself.
Question 2: Test values fluctuate greatly and cannot reach expected setting
Customer: The instrument can start output normally. But during relay calibration, measured values keep drifting; sometimes it cannot reach the preset test value, and will automatically reduce output. How to solve this problem?
Manufacturer: This phenomenon is generally caused by poor contact of test cables, mismatched wiring or heavy on‑site electromagnetic interference. Firstly, check whether test wires are aging, damaged or have loose connectors. Secondly, confirm wiring strictly follows the user manual to avoid wrong connection. Thirdly, pre‑heat the tester for 10‑15 minutes before formal testing. Keep the instrument far away from nearby high‑voltage equipment and strong magnetic interference sources. If necessary, perform built‑in self‑calibration. If deviation still exists, it is recommended to inspect the tested relay device first.
Question 3: Fan Fails to Start; Device Overheating Protection Activated
Customer: Half‑way through long‑duration continuous test, the cooling fan stops running suddenly. After rebooting the equipment, it still does not work. Has the instrument been burnt out?
Manufacturer: Please do not worry. In most cases this is protection action instead of real hardware damage. If overload or overtemperature protection is triggered without pressing the fault‑reset button, the fan control circuit will enter locked protection status. In addition, long‑time full‑load operation or blocked air vents will lead to excessive internal temperature and trigger thermal protection to cut off fan power supply. Correct operation steps: cut off AC power supply completely, let the instrument cool down for around 30 minutes. Re‑energize the unit, press reset button on panel to unlock, then restart system. If fan still cannot work normally, please contact technical support in time, do not open the cabinet.
Question 4: The main unit experiences frequent resets and tripping
Customer: During substation on‑site debugging, the portable relay tester occasionally resets automatically; sometimes power supply trips and interrupts ongoing protection test. How can we avoid this situation?
Manufacturer: Frequent reset and tripping are mainly brought by three factors: power‑supply fluctuation, strong external electromagnetic interference and unreliable grounding of main unit. It is recommended to adopt independent power supply with sufficient capacity on site; do not share power circuit with other high‑power equipment. The tester must be reliably grounded, and grounding points should be installed in moist soil as much as possible. Place test area away from strong electromagnetic interference sources. When tripping occurs, verify whether site power capacity meets instrument input requirement, meanwhile check test loops for hidden short‑circuit risks. If frequent reset still happens after troubleshooting, provide us with on‑site wiring diagram and fault phenomenon description, we will arrange remote technical guidance or on‑site service.
Question 5: Precautions for Transportation, Handling, and Wiring
Customer: This portable three‑phase relay protection comprehensive tester comes with many accessories. What special matters need attention for field wiring, on‑site operation and transportation?
Manufacturer: Please follow below important precautions. First, this is professional power test equipment. Reliable grounding is required during operation. At least two operators shall be present, and strictly comply with high‑voltage test safety specifications of your company. Second, double‑person cross‑verification is required after wiring is finished. Wrong connections may damage both tester and the under‑test protection relays. Third, avoid heavy impact, drop and violent vibration during transportation. Fourth, before testing, clean terminals of tested equipment and keep them dry to reduce measuring error caused by surface leakage. Fifth, store instrument in dry and well‑ventilated environment; avoid rain and moisture erosion. Read complete instruction manual before first use. On‑site test must be performed by experienced power testing specialists.
Question 6: Shipping Method
Customer: If we place an order, how do you typically ship the goods? Will there be any issues with transporting bulky items such as reactors?
Manufacturer: We default to using dedicated logistics lines or brand-specific express shipping services; small-sized main units and accessories may also be shipped via standard courier services. Large items, such as reactors and excitation transformers, are packed using wooden crates or wooden frames for reinforcement to prevent bumps and moisture exposure during transit; a packing list is included with each package to facilitate item-by-item counting for you. Logistics costs are typically determined by both parties in accordance with the contract terms; after shipment, we will send you both the tracking number and the carrier's contact phone number for easy tracking.If your project site is remote or if delivery to the site is required with a specified logistics company, please inform us in advance when placing your order; we can then coordinate and arrange accordingly.
Question 7: Delivery Lead Time
Customer: Our project is under tight deadlines; how long will it take for the order to be shipped after we place it? Can we request expedited shipping?
Manufacturer: Standard specifications – stock available; typically delivered upon receipt of the order. Orders can be shipped within [X] working days; for non-standard products requiring customized voltage levels, capacities, or reactor combination configurations, the production cycle typically ranges from [X] to [Y] days.The delivery time will be approximately 7-15 working days; the specific timeline shall be subject to the sales confirmation provided upon order placement. If your project has a tight schedule, please inform us of the latest expected delivery date before placing your order; we will first verify the production schedule and inventory status, and where possible, will coordinate expedited production and prioritize shipment. However, it is recommended to allocate sufficient transit time for logistics to avoid delaying on-site testing.
Question 8: After-sales Service and Warranty
Customer: What is the warranty period for this equipment? If any issues arise during on-site use, how will your after-sales service respond?
Manufacturer: We provide a two-year free warranty on the entire unit and lifelong technical support services. During the warranty period, if issues arise due to defects in the equipment itself, we will provide free repair or replacement of components; when problems occur on-site, we commit to responding within 24 hours; most wiring and parameter configuration issues can be resolved through remote guidance via video or telephone; for cases where an on-site visit is necessary, we will arrange for our technicians to arrive at the location to resolve the issue. After the warranty period expires, we still offer repair services, with spare parts supplied at cost price for the long term, and software updates provided free of charge for life. Upon delivery of the equipment, we also offer free operational training (video operation guides)to ensure that your testing personnel can operate the equipment independently and proficiently; should you have any further questions, please feel free to contact our dedicated after-sales hotline directly.
Question 9: Shipping methods for each region (Sea freight)
Customer: Our projects are distributed across several states, and our procurement volumes are substantial; are the shipping methods consistent across all states? How is the delivery time calculated?
Manufacturer: The specifications are identical; however, it should be specifically noted that this equipment set is large in size and heavy in weight—components such as the reactor and excitation transformer are all classified as heavy components. Therefore, regardless of which state or region the shipment is destined for, we will uniformly utilize sea freight transportation. The packaging employs export-grade wooden crates with reinforced structures, along with moisture-proof and rust-proof treatments; the design of these wooden crates is optimized for long-distance sea transport and multiple lifting and transshipment operations. Upon arrival at the destination, simply unpack the goods and conduct an inspection before putting them into use. Regarding delivery time, the sea freight transit period depends on the port of destination: near-sea routes are generally faster, whereas ocean routes may take longer; the exact number of days will be confirmed based on the shipping schedule specified in the bill of lading. We have a dedicated freight forwarding agency to handle booking of shipping space, customs declaration, insurance, and other related procedures; once the vessel departs, we will send you documents such as the bill of lading and the packing list, enabling you to arrange for the receipt of goods at the port of destination and their inland transshipment in advance
Shipping scenario
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