NAZD-H DC System Earth Fault Detector
- Brand : NANAOELEC
Product introductionNAZD-H DC System Earth Fault Detector applies to all DC system in any voltage class ,equipped withhigh-precision tester ,expanded the tested range and strengthened the anti-interfe
NAZD-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.
Also called 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
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
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
Product precautions information
1 The unit is must carefully handled when transportation, operation and storage, fall or strong vibration, etc. is
2. Signal source shall be added to the bus fault and ground.
3. The calipers of NAZD-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
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.