The HZDF-458W is a new-generation DC system ground fault locator designed for use at any voltage level. Equipped with a high-precision detection clamp meter, it processes multiple signal types to greatly improve detection range and anti-interference capability. Advanced algorithms and fuzzy control calculation theory quantify the advantage of the insulated branch circuit being detected, fully embodying the superiority of artificial intelligence. For grounding point location, the instrument provides highly accurate judgment — each detection pinpoints the location and direction of the grounding point.
This instrument is used to find the exact location of DC system grounding points in power plants and substations under uninterrupted power conditions. Various types of ground faults can be quickly located, with an accuracy rate reaching 100%.
| Output signal frequency | 2.5 Hz |
|---|---|
| Signal no-load output voltage | ±20V ±5% |
| Signal voltage amplitude error | <5% |
| Signal short circuit output current | ≤80 mA |
| Output port shock resistance | 400 VDC shock |
| Power supply voltage | AC 220V ±10% |
| Voltage frequency | 50 Hz ±5% |
| Input fuse | 200 mA |
| Maximum power | 3 W |
| Dimension | 300 mm × 270 mm × 200 mm |
| Signal current detection sensitivity | 0.5 mA |
|---|---|
| Signal generator impedance | 40 KΩ |
| Maximum output current | 2.5 mA |
| Receiver display | Insulation class 0–19, resistance value 0–300 KΩ |
| Dimension | 210 mm × 100 mm × 32 mm |
| A clamp size | φ50 mm |
| B clamp size | φ7 mm × 9 mm |
| Maximum detectable grounding resistance | 300 KΩ |
|---|---|
| Ground resistance measurement accuracy (0–4.5 KΩ) | Error ≤ 0.5 KΩ |
| Ground resistance measurement accuracy (4.5 KΩ–300 KΩ) | Error ≤ 10% |
Q1: Is your company a sales or a manufacturer?
We are an integrated trade and manufacturing company with our own factory.
Q2: If we need to customize our own brand or have special requirements for the built-in software of the machine, can it be customized?
Yes, we accept OEM/ODM/OBM and can customize the built-in software of the product according to the customer's special requirements.
Q3: What is the usual lead time? How long can we receive the order after placing it?
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.
Q4: How can we ensure that the product will not be damaged during transportation, considering the large size of the product?
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.
Q5: How do you handle after-sales service? What if there is a quality problem with the product or if the customer does not know how to operate it?
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.
