NRZD-H DC System Earth Fault Detector

NRZD-H DC System Earth Fault Detector

Classification: Earthing/Insulation/SF6 Gas Detection

Reference standard:

Verification:  View the certificate

Instructions:  DOC Instructions

  PDF Instructions

Tel: 027-87207771 87207772 87207773 87188862

Verification certificate
Product introduction

NRZD-H DC System Earth Fault Detector applies to all DC system in any voltage class ,equipped with high-precision tester ,expanded the tested range and strengthened the anti-interference ability by processing many kinds of signal. Adopted excellent method of calculation and advanced Fuzzy control calculation theory ,show us the advancement of the measured circuit branch by numerical value, which reflect the superiority of artificial intelligence sufficiently. Correctly detect the position of the earthing contact each time.

Alternative name

Earth fault detector, DC system earth fault detector

The Characteristics of the products

1. Easy to use, customers can directly operate only need turn on the power switch.
2. Safe and reliable, do not need power off the charger or other power source, without effects to DC system.
3. Applies to various voltage class, DC system 220V, 110V, 48V, 24V.
4. Wide range of application, any power plant, transformer substation, colliery, chemical plant and others power supply departments.
5.Easy to carry, the signal receiver equipped with battery, do not need external power source.
6.DC system do not need power off when searching the earthing contact, do not affect the normal work of the system.
7. Strong anti-jamming ability, without the effects by system distributed capacitance.
8.Intelligent charge Management, shorten the charging time, lengthen the battery life.

The parameters of the products
1, The signal generator
◆output signal frequency: 2.5Hz
Signal-load output voltage: ± 20V ± 5%
signal voltage amplitude error: <5%
signal Short circuit output current: ≤ 80mA
output impact resistance: 400V DC shock
Power supply voltage: AC220V ± 10%
voltage frequency: 50Hz ± 5%
Input fuse: 200mA
Maximum power: 3W
Volume: 300mm × 270mm × 200mm
2, The signal receiver
signal current detection sensitivity: 0.5mA
signal generator impedance: 40K 
Maximum output current: 2.5 mA
Receiver Display: Digital 0-19
Volume: 210mm × 100mm × 32mm
 A jaw size: Φ50mm
 B jaw size: Φ7mm × 9mm
3, The entire machine 
detecting the maximum ground resistance: 300KΩ
detect maximum capacitance: 20μF
earth resistance measurement accuracy :0-4 .5 KΩ error ≤ 0.5KΩ

Grounding capacitance measurement range:3-60uF

Grounding capacitance measurement accuracy: 3-10uF error≤1uF

Power supply: AC110V/115V/120V/127V/220V/230V/240V optional
Input frequency: 50Hz/60Hz optional
Note: The users can select the corresponding power which based on their local supply voltage and frequency, and we will confirm it before the delivery (or inform us that the goods will be used in which country advance)

Related products
Product information
1 The unit is must carelly handled when transportation, operation and storage, fall or strong vibration, etc. is not allowed.
2. Signal source shall be added to the bus fault and ground.
3. The calipers of NRZD-H DC System Earth Fault Detector only work for AC circuit, not DC circuit.
4 When all branches have no grounding, should pay attention to whether the power supply part of the grounding point, such as batteries, chargers and other parts.
5 The battery life can be extend if turn off the clamp and the signal receiver when not in use during the detection process.
6 Replace the battery when signal receiver power is low.
7 In order to keep the accuracy, do not hold clamp using your hand durning the detection process, should be allowed to clamp in a quiescent state.