EXTECH7440安规测试仪
东莞市新创通用仪器有限公司

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 6KVDC9999μA
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 ONOFF, 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 50Hz60Hz ±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
ACDC 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