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