1 High current generator for test loop
1.1 Insulated power supply
- Rated voltage : 3ph, 380V / 220V
- Rated power : < 220kVA
- Rated frequency : 60Hz
1.2 High Current generator
- Rated input voltage : 3ph, 380V
- Rated input frequency : 60Hz
- Rated output voltage : 15 V
- Rated output current : DC 6000A
- Duty : continuous operation
- Maximum ambient temp. : ≤ 40°C
1.3 Components
- High-current transformer
- Rectifier
- Shunt for current measurement
1.4 Control and monitoring of test loop
- Control and protection of the synchronous generator
- Control and protection of regulating transformer
- Monitoring and limiting of the DC current
- Switch off during critical operating conditions
- Communication via fiber-optical transmission to main control
1.5 Overvoltage protection
- limiting the voltage at the rectifier’s output in case of a flashover on testing
1.6 HV insulation support
- Withstand voltage : DC ±1200kV, AC 850kV, LI ±2200kV, SI ±1600kV

2 High current generator for reference loop
2.1 High Current generator
- Rated input voltage : 3ph, 380V
- Rated input frequency : 60Hz
- Rated output voltage : 15 V
- Rated output current : DC 6000A
- Duty : continuous operation
- Maximum ambient temp. : ≤ 40°C
2.2 Control and monitoring of test loop
- Control and protection of the synchronous generator
- Control and protection of regulating transformer
- Monitoring and limiting of the DC current
- Switch off during critical operating conditions
- Communication via fiber-optical transmission to main control
2.3 Components
- Regulating transformer
- High-current transformer
- Rectifier
- Shunt for current measurement
2.4 Overvoltage protection
- Limiting the voltage at the rectifier’s output in case of a flashover on testing

3 Measuring system
3.1 Main system
- PC based measuring system
- Automatic data storage function
- Providing external input/output functions
3.2 Plug-in temperature sensors
- Measurement uncertainty should be presented, and certification report should be submitted
3.3 Surface temperature sensor
- Measurement uncertainty should be presented, and certification report should be submitted

4 Control system
4.1 Main function
- Main/operating switch on/off
- Status indication of main/operating switch
- Warning and error messages of the test system
- Current increase/decrease
- Pre selection of test temperature or test current and test time
- Pre selection of two regulating speeds
- Display of temperature and current limits for protection of tested cable
- Password protection of essential system settings
4.2 Power supply
- Rated voltage : 2ph, 220V
- Frequency : 60Hz
- Interface : ETHERNET, fiber optic
4.3 Remote control PC
- Central processing unit with up-to-date clock frequency
- Working memory (RAM) with up-to-date capacity
- Hard disk with up-to-date capacity
- Network adapter: 10/100 Mbit, optical
- MS operating system (English)
4.4 Safety measures
- Red and green signal light
- Emergency STOP button
- Cable length 100 m
4.5 Control and measuring cables
- Length : ≥ 100 m