Testing machine is controlled by IPC P4, displayed by colorful VGA. It is programmable to test cold resistance, Hi-pot, insulation resistance, inter turns insulation, winding inductance and inductance balance. It has 2 stations, testing/replacing can be switched over by transparent shield. Shield on enables to enter testing status automatically, results is shown and pass/fail verification is out. On the rejection moment, there is sound optical alarm. Testing time is within 15 seconds.
The switch over part of this system takes imported hi-pot relay, high voltage, inter turns test voltage can be manual adjusted. This system achieves good stability and test precision etc.
Computer can collect, record, save every testing data and result. Its software is easy operation and flexible adjustment. The HMI is directly visible.
Parameter
1. Hi-pot
Testing condition: 0-3000V AC 50Hz
Time: 1-60seconds, settable
Voltage precision: ±5%FS
Current range: 0.1-100mA
Current precision: 0.1-1mA ±3%; 1-100mA ±1%
Alarm setting: any point through the range
2. Insulation resistance
Testing condition: DC500V
Resistance range: 10-500MΩ
Testing precision: ±3%
Alarm setting: any point through the range
3. Cold resistance
Testing condition: DC2mA/20mA/200mA
Testing range: 0-100mΩ-1Ω-10Ω
Resistance precision: ±1%
Threshold value setting: any point through the testing range
4. Inter turns insulation (A,B,C phase and between A, B, C comparison, in total 6 times)
Testing condition: DC0-4000V, adjustable, operator sets up the voltage value
Voltage precision: ±5%
Precision: verify short circuit of 1‰ turns.
5. Winding inductance (A, B, C phase)
Testing condition: 100HZ/1KHZ/10KHZ, adjustable
Range: 0.01Uh-9999H
Precision: ±1%
Alarm setting: any point through the range
6. Inductance balance
Calculation value
Alarm setting: any point through the range
Composition
1. 2 stations
2. GE electric cabinet
3. Items testing system
4. Control switch over system
5. Computer
Main body: P4 IPC
Monitor: Colorful VGA 19”
Keyboard: 101
6. Software
Items testing program
Threshold value setting and modifying program
Items setting and shielding program
Data statistic and analysis displaying program
Types input and save program
Report and graphs printing program
Testing data retrieving program