NRZD-H DC System Ground Fault Tester

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.

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.

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