Application cases

74 series safety comprehensive tester

Product features:

● Large screen 20 * 2 LCD display

● Correction of front panel input software

● PLC remote control interface

● Keyboard locking function

● Test line compensation function to ensure test accuracy

● Standard RS232 interface, optional GPIB interface

● AC withstand voltage/DC withstand voltage/insulation resistance/grounding impedance and other test functions

● Built in 50 groups of program storage, each group can be set with 8 test steps, and continuous test between steps can be conducted

Specifications:
Specification/model
seven thousand four hundred and forty
seven thousand four hundred and thirty
seven thousand four hundred and twenty
seven thousand four hundred and ten
AC withstand voltage
AC 0-5KV、0-40mA
AC 0-5KV、0-40mA
AC 0-5KV、0-30mA
AC 0-5KV、0-30mA
DC withstand voltage
DC0-6KV、0-9999uA
DC0-6KV、0-9999uA
DC0-6KV、0-9999uA
DC0-6KV、0-9999uA
Insulation impedance
DC 1KV、0-9999MΩ
DC 1KV、0-9999MΩ
DC 1KV、0-9999MΩ
DC 1KV、0-9999MΩ
Grounding resistance
3-40A、0-600mΩ
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Input Properties
input voltage
115 or 230Vac± 15%, single-phase, optional
Input frequency
47 - 63Hz
Input Fuse
6.3A
5.0A
AC withstand voltage test
output voltage
Range
0 -5KV
Resolution
1 Volt / step
Accuracy
± (1%Setting+5V)
output frequency
Range
60 or 50Hz, optional
Accuracy
± 100PPM
Output voltage stabilization rate
± (1% Setting+5V) (from no-load to full load)
AC output waveform
Sine wave, THD ＜ 2%, measured under resistance load& nbsp; Wave crest factor 1.3-1.5
Leakage current upper limit setting
AC range
0.00 - 40.00mA
0.00-30.00 mA
Accuracy
± (2%Setting+3Counts)
Resolution
0.001 mA/ step
Lower limit setting of leakage current
AC range
0.000 - 9.999 mA
Resolution
0.001 mA/ step
Accuracy
± (2%Setting+3Counts)
Ramp up time
Range
0.1-999.9sec
Resolution
0.1sec/ step
Accuracy
± （0.1%+0.05 sec）
Test time
Range
0, 0.3 - 999.9sec (0=continuous test)
Resolution
0.1sec/ step
Accuracy
± （0.1%+0.05 sec）
ARC Detector
1 - 9 can be set (9 is the highest sensitivity)
Line zeroing
0 -2.000 mA, manual or automatic
DC withstand voltage test
Voltage display
Range
0.00 - 6.00KV
Resolution
1Volt / step
Accuracy
± (2%Setting+5V)
DC output ripple
< 5%, measured under 6KVDC/9999uA resistance load
Leakage current upper limit setting
Current range
0.000 -9999uA
Resolution
0.1 uA / step
Accuracy
± (2%Setting+3Counts)
Lower limit setting of leakage current
Current range
0.0 -999.9μ A
Resolution
0.1 uA / step
Accuracy
± (2%Setting+3Counts)
Ramp up time
Range
0.1-999.9sec
Resolution
0.1sec/ step
Accuracy
± （0.1%+0.05 sec）
Test time
Range
0.4 - 999.9sec (0=continuous test)
Resolution
0.1sec/ step
Accuracy
± （0.1%+0.05 sec）
ARC Detector
1 - 9 can be set (9 is the highest sensitivity)
Line zeroing
direct
0 - 200μ A. Manual or automatic
Discharge time
≦200ms
Insulation resistance test
output voltage
Range
100 -1000Vdc
Resolution
1 Volt / step
Accuracy
± (1%Setting+3V)
high resistance
Range
1 -9999MΩ
Resolution
1MΩ/ step
Accuracy
± (2%Setting+2Counts)（500-1000Vdc / 1 -1000 MΩ）

± (8%Setting+2Counts)（500 -1000Vdc / 1000 -9999 MΩ）

± (8%Setting+2Counts)（100-500Vdc / 1 -1000 MΩ）
Decision upper limit setting
Range
0，1 -9999MΩ （0=OFF）
Determination of lower limit setting
Range
1-9999MΩ
Determination delay time
Range
0.5 - 999.9sec (0=continuous judgment)
Resolution
0.1 sec/ step
Accuracy
± （0.1%+0.05 sec）
Lower limit of charging current
Range
0.000 -3.500μ A or automatic setting
Grounding resistance test (only available for 7440 models)
output voltage
Range
3 -8Vac
Resolution
0.01 V/ step
Accuracy
± (2% of reading value+3 values) measured in open circuit state
output frequency
Range
60 or 50Hz, optional
Accuracy
± 100PPM
Output current
Range
3.00 -- 30Aac (40A can be obtained according to customers)
Resolution
0.01A/step
Accuracy
± (2% set value+3 values)
Grounding resistance
Range
0 -600mΩ
Resolution
1 mΩ/ step
Accuracy
± (2% Setting+2 values)
Upper and lower limit setting of grounding resistance
Range
0 - 600 mΩ (3 - 10A range), 0 - 150 mΩ (Range of 3-30A)
Resolution
1 mΩ/ step
Accuracy
± (2% Setting+2 values) (3 - 10A range)
Test time
Range
0.5 - 999.9sec (0 is continuous)
Resolution
0.1 sec/ step
Accuracy
± （0.1%+0.05 sec）
Test line zeroing compensation
Range
Maximum zero compensation range 200; mΩ
Resolution
1 mΩ/ step
Accuracy
± (1% set value+1 mΩ)
General specifications
PLC remote control function
input signal
Test、Rest
Output Signal
Pass、Fail、Processing
Memory group
There are 50 memory groups, each group has 8 steps.
Keyboard security lock
The keyboard operation can be locked by using a 4-digit digital password to prevent unauthorized personnel from setting test parameters.
Display brightness setting
Use the number keys on the panel to set, and there are 9 segments for selection.
Buzzer volume adjustment
Use the number keys on the panel to set. There are 10 segments for selection, and 0 is OFF.
correcting
Software correction mode, with the input key on the panel for correction.
Matrix scanning interface
Including internal key matrix scanners, 2 groups of matrix scanners can be connected
Matrix scanner (optional)
H.V× 4、H.V× eight
Scope of work environment
0-40℃, 20-80%RH
Dimensions (width× height× depth)
432× 147× 500mm
432× 147× 300mm
weight
22Kgs
22Kgs
18Kgs
12Kgs
Note: The 7420 can be equipped with four channel scanning and eight channel scanning, and customers can choose according to their own test requirements