| 详细介绍：
EXTECH7440安规测试仪
东莞市新创通用仪器有限公司
二手测试仪器测量仪表；销售；回收；维修；租凭；等相关业务主营
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电话；0769-81001545
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
|
MODEL
|
7410
|
7420
|
7430
|
7440
|
|
AC WITHSTAND VOLTAGE
|
|
Output Rating
|
5KVAC / 30mA
|
5KVAC / 30mA
|
5KVAC / 40mA
|
5KVAC / 40mA
|
|
|
Range
|
Resolution
|
Accuracy
|
|
Output Voltage,ACV
|
0 - 5000
|
1
|
±（2% of setting + 5V）
|
|
Output Frequency
|
50Hz / 60Hz ± 0.1%, User Selectable
|
|
Output Waveform
|
Sine Wave ,THD. < 2% (Resistive Load), Crest Factor = 1.3 - 1.5
|
|
Output Regulation
|
± (1% of output + 5V), From no load to full load
|
|
SETTINGS
|
|
Hi-Limit AC Current, mA
|
0 - 30.00
|
0 - 30.00
|
0 - 40.00
|
0 - 40.00
|
|
Resolution : 0.01, Accuracy : ±（2% of setting + 3counts）
|
|
Lo-Limit AC Current, mA
|
Range : 0 - 9.999
|
|
Resolution : 0.001, Accuracy : ±（2% of setting + 3counts）
|
|
Ramp Time, second
|
0.1 - 999.9
|
0.1
|
±（0.1% + 0.05sec）
|
|
Dwell Time, second
|
0, 0.3 - 999.9
(0=continuous)
|
0.1
|
|
Arc Detection
|
The range is from 1 - 9 (9 is the most sensitive)
|
|
AC Current Offset, mA
|
0 - 2.000 or Auto Set
|
|
DC WITHSTAND VOLTAGE
|
|
Output Rating
|
6KVDC/9999μA
|
|
Output Voltage, DCV
|
0 - 6000
|
1
|
±（2% of setting + 5V）
|
|
Output Ripple
|
< 5% (6KV / 9999 μA at Resistive Load)
|
|
SETTINGS
|
|
Hi-Limit DC Current, μA
|
0 - 9999
|
1
|
±（2% of setting + 3counts）
|
|
Lo-Limit DC Current, μA
|
0 - 999.9
|
0.1
|
±（2% of setting + 3counts）
|
|
Ramp Time, second
|
0.1 - 999.9
|
0.1
|
± (0.1% of setting + 0.05s)
|
|
Dwell Time, second
|
0, 0.4 - 999.9
(0=continuous)
|
0.1
|
|
Arc Detection
|
The range is from 1 - 9 (9 is the most sensitive)
|
|
DC Current Offset, ?A
|
0 - 200.0 or Auto Set
|
|
Ramp High Current
|
ON/OFF, User Selectable
|
|
Charge - Low Current, μA
|
0 - 350.0 or Auto Set
|
|
Discharge Time
|
≦ 200 msec
|
|
INSULATION RESISTANCE
|
|
Output Rating
|
1KVDC / 9999MΩ
|
|
Output Voltage, DCV
|
100 - 1000
|
1
|
± (2% of setting + 3V)
|
|
Hi-Limit Resistance, MΩ
|
0, 1 - 9999 (0=OFF)
|
1
|
100 - 499V
1 - 999.9, ± (8% of setting + 2counts)
500 - 1000V
1 - 999.9, ± (2% of setting + 2counts)
1000 - 9999, ± (8% of setting + 2counts)
|
|
Lo-Limit Resistance, MΩ
|
1 - 9999
|
1
|
|
Delay Time, second
|
0, 0.5 - 999.9
(0=continuous)
|
0.1
|
±（0.1% + 0.05sec）
|
|
Charge - Low Current, μA
|
0 - 3.500 or Auto Set
|
|
GROUND BOND (7440 ONLY)
|
|
Output Rating
|
30A / 600mΩ, 8V
|
|
Output AC Current, A
|
3.00 - 30.00
|
0.01
|
± (2% of setting +3 counts)
|
|
Output AC Voltage, V
|
3.00 - 8.00
|
0.01
|
± (2% of setting +3 counts) at Open circuit
|
|
Output Frequency
|
50Hz/60Hz ±100ppm, User Selectable
|
|
SETTINGS
|
|
Hi-Limit Resistance, mΩ
|
0 - 150 (3 - 30A)
|
1
|
± (2% of setting +2 counts)
|
|
Lo-Limit Resistance, mΩ
|
0 - 600 (3 - 10A)
|
|
Lead Resistance Offset, mΩ
|
0 -200
|
1
|
± (2% of setting +2 counts)
|
|
Dwell Time, second
|
0, 0.5 - 999.9 sec (0=continuous)
|
0.1
|
± (0.1% of setting + 0.05s)
|
|
MEASUREMENT
|
|
AC/DC Voltage, KV
|
0 - 6.00
|
0.01
|
±(1.5% of reading ) > 500V
±(1.5% of reading + 1 count) < 500V
|
|
DC Voltage, V (IR)
|
100 - 1000
|
1
|
±（1.5% of reading + 3V）
|
|
AC Current Range, mA
|
0 - 3.500
|
0 - 3.500
|
0 - 3.500
|
0 - 3.500
|
|
3.00 - 30.00
|
3.00 - 30.00
|
3.00 - 40.00
|
3.00 - 40.00
|
|
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