NRZD-H DC System Ground Fault Tester is a new generation of DC ground fault tester. It can be applied to DC systems of any voltage level and is equipped with a high-precision detection clamp meter, which greatly improves the detection range and anti-interference ability through efficient processing of multiple signals; Using excellent algorithm and advanced fuzzy control calculation theory, the advantage degree of the detected insulation branch is expressed in numerical form, which fully reflects the advantages of artificial intelligence; For the determination of the location of the grounding point, it has accurate judgment, and each detection can point out the location and direction of the grounding point.
Overview
Product Characteristics
(1) Easy to use. The instrument can be used directly by turning on the power switch without other key operations.(2) Safe and reliable. The instrument does not need stope or float type charger and all other power supplies and has no impact on the DC system.
(3) Many applicable voltages level. DC system 220V 110V 48V 24V can be used.
(4) Wide application range. It can be used in any type of power supply department such as power plants substations coal mines and chemical plants.
(5) Convenient to carry the signal receiver has a built-in battery no external power supply is required and it can be carried anywhere to find the grounding point.
(6) The DC system is constantly powered to find the grounding point which does not affect the normal operation of the system.
(7) Strong anti-interference ability overcoming the influence of distributed capacitance of the system.
(8) Intelligent charging management reduces charging time and prolongs battery life.
Models
| 1. Signal generator | Output signal frequency | 2.5Hz |
| Signal no-load output voltage | ±20V±5% | |
| Signal voltage amplitude error | <5% | |
| Signal short-circuit output current | ≤80mA | |
| Impact resistance of the output port | 400V DC impact | |
| Power supply voltage | AC220V±10% | |
| Voltage frequency | 50Hz±5% | |
| Input fuse | 200mA | |
| Maximum power | 3W | |
| Volume | 300mm×270mm×200mm | |
| 2. Signal receiver | Signal current detection sensitivity | 0.5mA |
| Signal generator impedance | 40KΩ | |
| Maximum output current: | 2.5 mA | |
| Receiver display | numbers 0-19 | |
| Volume | 210mm×100mm×32mm | |
| A jaw size | Φ50mm | |
| B jaw size | Φ7mm×9mm | |
| 3. The whole machine | Maximum tested grounding resistance | 300KΩ |
| Maximum tested capacitance | 20 μF | |
| Test accuracy of grounding resistance | 0-4.5kΩ error ≤ 0.5K Ω | |
| Test range of grounding capacitance | 3-60uF | |
| Test accuracy of grounding capacitance | 3-10uF error ≤ 1uF |
