EXTECH7440安规测试仪
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高价上门回收二手仪器仪表；价格公道，童叟无欺，欧阳经理
华仪7440安规综合分析仪特点
交/直流耐压、绝缘阻抗、接地阻抗测试
20 × 2 点矩阵OLED 显示器
可选配内建4组或8组高压矩阵式扫描信道(7420, 7430 & 7440)
内建50组程序记忆、每一组8个测试步骤可进行程序记忆步骤的连结测试
测试线路阻抗自我归零校整功能，确保测试结果的准确性
前面板软件输入校正
内建PLC Remote遥控界面
键盘锁定功能
可外接标准GPIB、USB & RS232、Printer Card 作控制
全范围电压输出的稳压率在1%以内
EXTECH 7440安规综合测试仪规格
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MODEL |
7410 |
7420 |
7430 |
7440 |
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AC WITHSTAND VOLTAGE |
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Output Rating |
5KVAC / 30mA |
5KVAC / 30mA |
5KVAC / 40mA |
5KVAC / 40mA |
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Range |
Resolution |
Accuracy |
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Output Voltage,ACV |
0 - 5000 |
1 |
±（2% of setting + 5V） |
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Output Frequency |
50Hz / 60Hz ± 0.1%, User Selectable |
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Output Waveb |
Sine Wave ,THD. < 2% (Resistive Load), Crest Factor = 1.3 - 1.5 |
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Output Regulation |
± (1% of output + 5V), From no load to full load |
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SETTINGS |
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Hi-Limit AC Current, mA |
0 - 30.00 |
0 - 30.00 |
0 - 40.00 |
0 - 40.00 |
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Resolution : 0.01, Accuracy : ±（2% of setting + 3counts） |
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Lo-Limit AC Current, mA |
Range : 0 - 9.999 |
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Resolution : 0.001, Accuracy : ±（2% of setting + 3counts） |
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Ramp Time, second |
0.1 - 999.9 |
0.1 |
±（0.1% + 0.05sec） |
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Dwell Time, second |
0, 0.3 - 999.9 |
0.1 |
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Arc Detection |
The range is from 1 - 9 (9 is the most sensitive) |
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AC Current Offset, mA |
0 - 2.000 or Auto Set |
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DC WITHSTAND VOLTAGE |
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Output Rating |
6KVDC/9999μA |
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Output Voltage, DCV |
0 - 6000 |
1 |
±（2% of setting + 5V） |
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Output Ripple |
< 5% (6KV / 9999 μA at Resistive Load) |
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SETTINGS |
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Hi-Limit DC Current, μA |
0 - 9999 |
1 |
±（2% of setting + 3counts） |
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Lo-Limit DC Current, μA |
0 - 999.9 |
0.1 |
±（2% of setting + 3counts） |
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Ramp Time, second |
0.1 - 999.9 |
0.1 |
± (0.1% of setting + 0.05s) |
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Dwell Time, second |
0, 0.4 - 999.9 |
0.1 |
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Arc Detection |
The range is from 1 - 9 (9 is the most sensitive) |
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DC Current Offset, ?A |
0 - 200.0 or Auto Set |
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Ramp High Current |
ON/OFF, User Selectable |
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Charge - Low Current, μA |
0 - 350.0 or Auto Set |
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Discharge Time |
≦ 200 msec |
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INSULATION RESISTANCE |
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Output Rating |
1KVDC / 9999MΩ |
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Output Voltage, DCV |
100 - 1000 |
1 |
± (2% of setting + 3V) |
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Hi-Limit Resistance, MΩ |
0, 1 - 9999 (0=OFF) |
1 |
100 - 499V |
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Lo-Limit Resistance, MΩ |
1 - 9999 |
1 |
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Delay Time, second |
0, 0.5 - 999.9 |
0.1 |
±（0.1% + 0.05sec） |
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Charge - Low Current, μA |
0 - 3.500 or Auto Set |
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GROUND BOND (7440 ONLY) |
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Output Rating |
30A / 600mΩ, 8V |
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Output AC Current, A |
3.00 - 30.00 |
0.01 |
± (2% of setting +3 counts) |
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Output AC Voltage, V |
3.00 - 8.00 |
0.01 |
± (2% of setting +3 counts) at Open circuit |
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Output Frequency |
50Hz/60Hz ±100ppm, User Selectable |
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SETTINGS |
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Hi-Limit Resistance, mΩ |
0 - 150 (3 - 30A) |
1 |
± (2% of setting +2 counts) |
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Lo-Limit Resistance, mΩ |
0 - 600 (3 - 10A) |
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Lead Resistance Offset, mΩ |
0 -200 |
1 |
± (2% of setting +2 counts) |
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Dwell Time, second |
0, 0.5 - 999.9 sec (0=continuous) |
0.1 |
± (0.1% of setting + 0.05s) |
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MEASUREMENT |
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AC/DC Voltage, KV |
0 - 6.00 |
0.01 |
±(1.5% of reading ) > 500V |
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DC Voltage, V (IR) |
100 - 1000 |
1 |
±（1.5% of reading + 3V） |
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AC Current Range, mA |
0 - 3.500 |
0 - 3.500 |
0 - 3.500 |
0 - 3.500 |
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3.00 - 30.00 |
3.00 - 30.00 |
3.00 - 40.00 |
3.00 - 40.00 |
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