产品简介
NAGM系列可调高压数字兆欧表测试电压高，功率大，被测对象往往又带有工频泄漏或感应上高压电能，因此为了人身安全，使用该仪器首先一定要接好安全接地线。
该仪表在高压启动后，请不要采用人工放电方式检查仪表，在测试完毕后也应等待仪表自动放电使电压表回零后才进行例行安全需要的人工放电。因为短路放电的强烈电脉冲波有损被测对象的绝缘寿命，如果脉冲窜入仪表，也有损仪表内的集成电路。
NAGM系列可调高压数字兆欧表是为了解决高压变电、发电厂现场强下对大型高压变压器、电机电器、远程电力电缆或埋设电缆等电气绝缘电阻特性的测试而设计研制。它亦可用于广泛领域的电气绝缘电阻特性测。
产品别名
数字兆欧表，数字式兆欧表，数显兆欧表，绝缘表，绝缘电阻测试仪，高压绝缘电阻测试仪，绝缘电阻测仪，绝缘特性测试仪，电动摇表，数字摇表，数显摇表，数字兆欧计，数字式兆欧计，高压数字绝缘电阻测试仪，数字高压绝缘电阻测试仪，数字高压兆欧表，数字式高压兆欧表，高压数字式兆欧表，数字绝缘表，数显绝缘表，电子式绝缘电阻测试仪，数字式绝缘电阻测试仪，数显式绝缘电阻测试仪，数显绝缘电阻测试仪，绝缘电阻仪，数字式电动兆欧表，大功率高压兆欧表，可调高压数字兆欧表
产品特性
1、此可调高压数字兆欧表具有强力抗电场感应能力，达到2mA(50Hz)，已知适应50万伏变电现场不拆线测50万伏大型变压器的绝缘电阻参数。
2、测试电源的短路电流＞5mA大15mA。适应大容、大电感的测试。
3、电阻测范围宽广，从0.5MΩ～2000GΩ。读数准确、分辨力高。
4、测试电源的电压范围宽广，可选择0.25、0.5、1、2.5、5、10、15kV，也可从0V平滑调起连续调节到需要的电压。
5、具有计时报时功能，提醒使用者记录，分析被测对象的吸收比和极化指数。
产品参数
1、产品规格
|
型号
|
测试电压
|
电压准确度
|
短路电流
|
|
NAGM-5kV
|
0～0.25、0.5、1、2.5、5kV
|
±(5%+10V)
|
＞5mA
|
|
NAGM-10kV
|
0.5、1、2.5、5、10kV
|
±(5%+10V)
|
＞5mA
|
|
NAGM-15kV
|
1、2.5、5、10、15kV
|
±(5%+10V)
|
＞5mA
|
|
NAGM-20kV
|
0.5、1、2.5、5、10、20kV
|
±(5%+10V)
|
＞5mA
|
2、程与准确度：
|
程(限压)
|
电阻测有效范围
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准确度
|
|
20MΩ/500V
|
0.5～19.99MΩ
|
±(5%+5字)
|
|
200MΩ/1000V
|
5.0～199.9MΩ
|
±(5%+5字)
|
|
2GΩ
|
0.05～1.999GΩ
|
±(5%+5字)
|
|
20GΩ
|
0.5～19.99GΩ
|
±(5%+5字)
|
|
200GΩ/10kV、5kV
|
50～199.9GΩ
|
±(10%+10字)
|
|
2000GΩ/20kV、15kV
|
50～1999GΩ
|
±(20%+10字)
|
GΩ程定标电压为2.5kV
3、抗电场能力：2mA(50Hz)
4、报时、报功能：秒表显示大值为19分59秒。20分钟一循环。声响报点为15秒、60秒、每分钟。到点报短促声响，电阻读数保持5秒，被测电阻低于程下限，读数无效时以连续声报
5、显示表：三位半LCD数字表头三个，分别显示测试电压、电阻、时间
6、供电：由内附1.2V/2000mAh镍氢可充电电池10节，DC12V供电。带交流(50/60Hz)220V接入口对电池充电或浮充电工作
7、使用环境：温度：0℃～40℃；相对湿度：20%～90%RH
8、外形尺寸：315mm×240mm×155mm
9、仪器重：5kg
Product introduction
NAGM Series adjustable high-voltage digital megger, also called High Voltage Insulation Resistence Tester, it is designed and developed for testing the insulation resistance of large high voltage tranormer, electrical appliances, remote power cables or underground cable and others under strong interference in the high voltage substations or power plants. It can also be used for measuring electrical insulation resistance in broad areas.
NAGM Series adjustable high-voltage digital megger test high voltage, large power, and the tested object is often with power frequency leakage or the interference of high voltage electric induction, so for the safety of person, you should connect the grounding wire safety.
Also called name
Digital megger, digital megger, insulation sheet, insulation resistance tester, high voltage insulation resistance tester, insulation resistance meter, insulation characteristics tester, electric shake table, digital shake table, the number of significant shake table, digital Megaohmmeter, digital Megaohmmeter, high voltage digital insulation resistance tester, digital high voltage insulation resistance tester, digital pressure megger, digital pressure megger, high voltage digital megger, digital insulation meter, digital insulation meter, electronic insulation resistance tester, digital insulation resistance tester, digital insulation resistance tester, digital insulation resistance tester, insulation resistance tester, digital electric megger, digital high megger, high-power high megger
The Characteristics of the products
1 The instrument has very strong electric field induction interference resistance, can be up to 2mA (50Hz), it can adapt to the 500,000 V substation site, can test the insulation resistance of 500,000V large tranormer without disconnection.
2 Test the short circuit current of power is greater than 5mA, the maximum is 15mA. Adapt to high capacity and large inductance test.
3 Wide range of resistance measurement, from 0.5MΩ to 2000GΩ, with accurate reading and high resolution.
4 Wide range of voltage measurement, 0.25kV, 0.5kV, 1kV, 2.5kV, 5kV, 10kV, 15kV can be optional, it can also continuous adjustment from 0V smoothly to the required voltage.
5 with time function to remind the users to record and analysis the absorption ratio and polarization index of the measured object.
The parameters of the products
1、Product specifications:
|
Model
|
Measuring voltage
|
Accuracy of voltage
|
Short circuit current
|
|
NAGM-5kV
|
0～0.25、0.5、1、2.5、5kV
|
±(5%+10V)
|
＞5mA
|
|
NAGM-10kV
|
0.5、1、2.5、5、10kV
|
±(5%+10V)
|
＞5mA
|
|
NAGM-15kV
|
1、2.5、5、10、15kV
|
±(5%+10V)
|
＞5mA
|
|
NAGM-20kV
|
0.5、1、2.5、5、10、20kV
|
±(5%+10V)
|
＞5mA
|
2、Measuring range and accuracy：
|
Measuring range (limit)
|
Resistance measurement range
|
Accuracy
|
|
20MΩ/500V
|
0.5～19.99MΩ
|
±(5%+5 word)
|
|
200MΩ/1000V
|
5.0～199.9MΩ
|
±(5%+5 word)
|
|
2GΩ
|
0.05～1.999GΩ
|
±(5%+5 word)
|
|
20GΩ
|
0.5～19.99GΩ
|
±(5%+5 word)
|
|
200GΩ/10kV、5kV
|
50～199.9GΩ
|
±(10%+10 word)
|
|
2000GΩ/20kV、15kV
|
50～1999GΩ
|
±(20%+10 word)
|
Standard rated voltage of GΩ range is 2.5kV.
3、Anti-electric interference: 2mA (50Hz)
4、The function of time and alarm: the stopwatch shows a maximum value of 19 minutes and 59 seconds, 20 minutes a cycle. The alarm time is about 15 seconds per minute or 60 seconds, the sound is short, the resistance reading keep 5 seconds, when the measured resistance is lower than the limit of the range, the reading is invalid, it can continuous alarm.
5、Display: three and half digit, three LCD digital meter respectively show the test voltage, resistance, time.
6、Power supply: enclosed 10 pieces of 1.2V/2000mAh rechargeable battery, DC12V. With AC 220V (50/ 60HZ) access to the battery charging or float charging.
7、Operating environment:
Temperature: 0℃ ~ 40℃; Relative humidity: 20% ~ 90% RH
8、Size: 315mm×240mm×155mm
9、Weight: 5kg
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