The HZJB-340S is a high-performance automatic three-phase protection relay tester designed for comprehensive testing of line protection, main transformer differential protection, excitation control, and various other protection applications. Featuring standard four-phase voltage and three-phase current output, this instrument is capable of testing both traditional relays and protection devices as well as modern microcomputer protections.
It is especially convenient and ideal for testing transformer differential protection and auto-reclosing devices. The tester fully complies with the national standard GB/T 7261-2016 <Basic Test Methods for Relay Protection and Safety Automatic Devices> and the national standard DL/T624-2010 <Technical Conditions for Micro-computer Relay Protection Test Devices>.
| Single-phase current output (RMS) | 0–30A/phase, accuracy 0.2% ±5mA |
|---|---|
| Three-phase parallel output (RMS) | 0–90A three-phase same-phase parallel output |
| Phase current long-term operating system (RMS) | 10A |
| Maximum output power per phase | 300VA |
| Maximum output power for three-phase parallel current | 800VA |
| Maximum allowable working time for three-phase parallel current | 5s |
| Frequency range | 0–1000Hz, accuracy 0.001Hz |
| Harmonic times | 2–20 times |
| Phase | 0–360°, accuracy 0.1° |
| DC current output | 0–±10A/phase, accuracy 0.5% ±5mA |
|---|
| Single-phase voltage output (RMS) | 0–120V/phase, accuracy 0.2% ±5mV |
|---|---|
| Line voltage output (RMS) | 0–250V |
| Phase voltage / line voltage output power | 75VA / 100VA |
| Frequency range | 0–1000Hz, accuracy 0.001Hz |
| Harmonic times | 2–20 times |
| Phase | 0–360°, accuracy 0.1° |
| Single-phase voltage output amplitude | 0–±150V, accuracy 0.2% ±5mV |
|---|---|
| Line voltage output amplitude | 0–±300V |
| Phase voltage / line voltage output power | 90VA / 180VA |
| Switch input terminals | 8 pairs |
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| Idle contact | 1–20mA, 24V internal active output |
| Potential reversal | Passive contact: low resistance short-circuit signal Active contact: 0–250V DC |
| Switch output terminals | 4 pairs, idle contact, interrupt capacity: 110V/2A, 220V/1A |
| Time range | 1ms–9999s, measurement accuracy: 1ms |
|---|---|
| Single unit dimensions and weight | 328 × 168 × 250 mm³, approximately 12.5kg |
| Power supply | AC220V ±10%, 50Hz, 10A |
| Working 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 |
We are an integrated trade and manufacturing company with our own factory.
Yes, we accept OEM/ODM/OBM and can customize the built-in software of the product according to the customer's special requirements.
In normal circumstances, products in stock can be received within 5 to 7 days via the fastest international express. Other situations may vary depending on the quantity of products ordered, whether there are special customization requirements, and the delivery time chosen.
We have professional internal and external packaging to ensure the safety and stability of the products during transportation. For fragile or other special parts, we will include an extra set to ensure that the customer can use the product immediately upon receipt.
For quality issues that are not caused by human error, we provide a one-year warranty from the time the product is delivered, and lifetime technical support. Other after-sales issues will be addressed by our professional technical staff within 24 hours. The product comes with a user manual and an operation video.
