Three‑Phase Microcomputer Relay Protection Tester 3Voltage 3Current Secondary Injection Relay Test Set

Application Scenarios

FAQ

Question 1: No resonant point / Unable to output normal analog quantity
Customer: After starting the test, the instrument cannot output correct voltage and current analog signals. What causes this?
Manufacturer: Check test wiring for loose or wrong connection first. Confirm output terminals are firmly connected to relay under test. Verify no short‑circuit on output loop. Restart device. If problem persists, stop operation and contact technical support. Do not open cabinet for self‑repair.
Question 2: Test result deviation is relatively large
Customer: The measured relay operating value deviates obviously from standard value during protection testing.
Manufacturer: Check wiring connection status. Confirm test parameters setting matches relay specification. Warm‑up the tester for 15‑20 minutes before formal testing. Avoid strong electromagnetic interference near working site. If deviation still exists, contact us for guidance.
Question 3: Device trips or protection alarm pops up during output
Customer: While outputting large current or voltage, the tester triggers alarm and stops output automatically.
Manufacturer: Automatic protection triggers for over‑current, over‑voltage or short‑circuit. Immediately cut off output, check external test loop for short‑circuit and wrong wiring. Remove fault cause, reset alarm then restart test. Repeated alarms indicate internal abnormality; please stop using and contact support.
Question 4: Touch screen unresponsive, program crash or data loss
Customer: Touch screen freezes occasionally; saved test projects disappear.
Manufacturer: Avoid forced power‑off during test running. Reboot instrument when screen stuck. Back‑up important test files timely. Use stable power supply, reduce grid fluctuation impact. If fault recurs, contact our technical team.
Question 5: Operation, transportation & wiring precautions
Customer: What points should be noted for field test, transport and wiring?
Manufacturer: Keep reliable grounding during operation. Strictly follow wiring sequence; wrong wiring will damage instrument. Avoid violent shock during transportation. Do not disconnect wiring while output is active. Read user manual fully before field work, operated by professional electrical personnel.
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

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