Measuring Instrument & Tester
Automatic Withstand Voltage & Insulation Tester
MODEL 850A
- ■Withstand voltage test AC 0 to 5 kV, leak current setting 0.00 to 99.99 mA
Insulation resistance test DC 500/1000 V, measuring range 0 to 9990 MΩ
- ■Rise- and Fall-time of withstand voltage tests can be arranged.
- ■Remote I/O and RS-232C interfaces are equipped.
- ■Clear and easy to read color LCD
Catalog
Operation manual
Typical Application
Motor and Generator, Spark plugs, Capacitors, Connectors, Aviation components, Transformers, Wire and Cables, Coils and Chokes, Switches and Relays
Model Designation
850A Output: RS-232C(std.)
Basic Specifications
Withstand voltage test
| Test voltage |
| Output voltage |
AC 0.2 to 5.00 kV (50 Hz and 60 Hz switchable) |
| Output capacity |
500 VA (5 kV, 100 mA)
Continuous application time of the maximum current output within 1 min. |
| Wave form |
Sine wave ( Rate of strain: Less than 5 %, when No-load applied.) |
| Power frequency |
50 / 60 Hz |
| Voltage fluctuation rate |
Less than 15 % (Maximum rating ➔ No-load: in resistive load) |
| Voltage application method |
Zero cross switch |
| Voltage measurement |
| Rectification method |
Average rectified effective value display |
| Digital display |
Applied voltage is displayed during test, and the value is retained after the test end. |
| Measurement accuracy |
± (0.5 % of F.S + 10 V) |
| Current measurement |
| Rectification method |
Average rectified effective value display |
| Digital display |
Measurement range 0.00 to 99.99 mA
Leakage current is displayed during test, and the value is retained after the test end. |
| Judgment method |
| Upper limit |
Digital comparator, Analog comparator (current more than 100 mA can be detected) |
| Lower limit |
Digital comparator |
|
| Setting range |
| Upper limit |
0.05 to 99.99 mA |
| Lower limit |
0.01 to 50.00 mA /OFF |
| Resolution |
0.01 mA |
|
| Judgment conditions |
| Upper limit ≧ Leakage current ≧ Lower limit |
・・・ GOOD |
| Upper limit ＜ Leakage curent |
・・・ HIGH NG |
| Lower limit ＞ Leakage current |
・・・ LOW NG |
|
| Test time |
| Setting range |
00:00.2 to 99:59.9 s and OFF (continuous) |
| Setting resolution |
0.1 s |
| Time display |
| During test |
Remaining time is displayed, when timer is ON.
Elapsed time is displayed, when timer is OFF. |
| End of test (during wait) |
Set value is displayed. |
|
| Setting accuracy |
Set value ± (0.1 % + 20 ms) |
| Rise time |
| Function |
Voltage rises linearly till test value in setting time. |
| Setting range |
00:00.1 to 01:59.9 s and OFF
Setting resolution 0.1 s |
| Setting accuracy |
Set value ± (0.1 % + 20 ms) |
| Fall time |
| Function |
Voltage falls linearly from test value to 0 V in setting time. |
| Setting range |
00:00.1 to 01:59.9 s and OFF
Setting resolution 0.1 s |
| Setting accuracy |
Set value ± (0.1 % + 20 ms) |
Insulation resistance test
| Test voltage |
| Rated measuring voltage |
DC 500 V/ 1000 V |
| Open circuit voltage |
Within 125 % of rated measuring voltage |
| Rated measuring current |
1 mA |
| Short circuit current |
Less than 15 mA |
| Display |
0 to 9990 MΩ Zero suppress Auto range
Insulation resistance is displayed during test.
Resistance value at the end of test is retained. |
| Test judgment |
| Judgment method |
Upper and Lower limit by digital comparator |
| Setting range |
0.01 to 99.99 MΩ/0.1 to 999.9 MΩ/1 to 9999MΩ |
| Judgment conditions |
| Upper limit ≧ Leakage current ≧ Lower limit |
・・・ GOOD |
| Upper limit ＜ Leakage curent |
・・・ HIGH NG |
| Lower limit ＞ Insulation resistance |
・・・ LOW NG |
|
| Test time |
| Setting range |
00:00.2 to 99:59.9 s and OFF
Setting resolution 0.1s |
| Setting accuracy |
Set value ± (0.1 % + 20 ms) |
| Time display |
| During test |
Remaining time is displayed. |
| End of test (during wait) |
Set value is displayed. |
|
| Response time |
Display response and judgment time (medium value).
| Auto range |
0.4 s |
| Fixed range |
0.2 s |
| Setting accuracy |
Set value ± (0.1 % + 20 ms) |
|
| Mask time |
| Setting range |
00:00.1 to 01:59.9 s and OFF
Setting resolution 0.1 s
Mask time < Test time |
| Discharge function |
| Electric charge on specimen can be discharged. |
Interface
| RS-232C Utility software is optional. |
| Function |
To set test conditions and output judgment results. |
| Connector |
D-sub 9P |
| Transmission system |
Asynchronous method |
| Transmission speed |
9600/19200/38400 bps |
| Data length |
8 bit |
| Parity |
None/Even/Odd |
Specification
| Power supply |
AC 100 to 240 V 50/60 Hz |
| Power supply voltage tolerance range |
AC 90 to 250 V |
| Power consumption |
| AC 100 V |
During standby Approx. 70VA / Maximum load Approx. 730VA |
| AC 200 V |
During standby Approx. 135VA / Maximum load Approx. 750 VA |
|
| Operation ambient temperature |
0 to 40 ℃ |
| Operation ambient humidity |
20 to 80 %RH (No-condensing) |
| Storage temperature |
-20 to 70 ℃ |
| Withstand voltage |
Power terminal - Outer box AC 1350 V 1min |
| Dimensions |
320 (W) x 150 (H) x 430 (D) (Unit: mm) |
| Weight |
Approx. 18 kg |
| Accessory |
| High voltage cable 2 m |
1 pair |
| Earth cord 3 m |
1 pc |
| Power cord 2.5 m |
1 pc |
| Remote I/O plug |
1 pc |
| Operation manual |
1 pc (CD) |
|
| Option |
| RS-232C cable |
5881-11-018 |
| Utility software (RS-232C) |
5890-18 |
|
