南澳电气 NAZJ6 直流系统接地故障测试

产品简介 

NAZJ6直流系统接地故障测试仪是新一代直流接地故障测试仪。它能够适用于任何电压等级的直流系统，配备了高精度的检测钳表，通过对多种信号的高效处理大大提高了检测范围与抗干扰能力；采用了**的算法和**的模糊控制计算理论，将被检测绝缘支路的优势程度以数值的形式表示出来，充分体现了人工智能的优越性；对于接地点位置的断定，它们更是拥有准确的判断力，每次检测都能够指出接地点位置及方向。

NAZJ6直流系统接地故障测试仪以系统安全为首要前提，按行业标准的**要求，以可靠的低频信号方式进行检测，并在现场进行了大量的实际应用，对系统无任何影响。

发电厂、变电站的直流系统为控制、保护、信号和自动装置提供电源，直流系统的安全连续运行对保证发供电有着极大的重要性。由于直流系统为浮空制的不接地系统，如果发生两点接地，就可能引起上述装置误动、拒动，从而造成重大事故。因此当发生一点接地时，就应在保证直流系统正常供电的同时准确迅速地探测出接地点，排除接地故障，从而避免两点接地可能带来的危害。

NAZJ6直流系统接地故障测试仪用于在不断电情况下查找发电厂、变电站直流系统接地点的准确位置。各种类型的接地故障，均能迅速地查找出接地点，准确率达到100％。

产品别名

直流系统接地故障测试仪、直流接地故障测试仪、直流系统故障测试仪

产品特性 

1、使用简单。NAZJ6直流系统接地故障测试仪只需打开电源开关就可直接使用，无需别的按键操作。

2、安全可靠。NAZJ6直流系统接地故障测试仪无需停浮充电机及其它一切电源，对直流系统没有任何影响。

3、适用电压等级多。直流系统220V、110V、48V、24V都可以使用。

4、适用范围广。任何类型电厂、变电站、煤矿、化工厂等供电部门都可使用。

5、携带方便，信号接收器自带电池，无需外接电源，可以随身携带到任何地方查找接地点。

6、直流系统不断电查找接地点，不影响系统正常工作。

7、抗干扰能力强，克服了系统分布电容的影响。

8、智能化充电管理，减少充电时间，延长电池寿命。

Product introduction

NAZJ6 DC System Earth Fault Detector applies to all DC system in any voltage class ,equipped with high-precision tester,expandedthe tested rangeand strengthened the anti-interference ability by processing many kinds of signal. Adopted excellent method of calculation and advanced Fuzzy control calculation theory,show us theadvancement of themeasured circuit branch by numerical value, which reflect the superiority of artificial intelligence sufficiently. Correctly detect the position of the earthing contacteachtime.

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 powersupplydepartments.

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 impedanceW: 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 .5KΩerror≤0.5KΩ

◆Grounding capacitance measurement range：3-60uF

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

Productprecautions information
1 The unit is mustcarefully handled when transportation, operation and storage, fallorstrong vibration, etc. is not allowed.
2. Signal source shall be added to the bus fault and ground.
3. The calipers of NAZJ6 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.