Technical performances

Power supply: AC single phase 220 x(1 ±10%)V; three phase 380 x (1 ± 10%)V, 50 x (1 ± 5%)Hz

32 Explosion-proof grade: Exod IIAT3.(The grade can be determined according to users' requirements.)

Cooling: Oil cooling.

Basic performance (each subcircuit)

Output range: 2% ~ rated value.

Ripple coefficient: Ripple coefficient is not more than 5% when the unit is operating on rated state.

Constant potential range: The constant potential is consecutive and can be regulated in the range of OmV3000mV.

Constant potential precision: The error between controlled potential and protective potential is less than 5mV.

3.45 Reference input impedance: The input impedance is more than 1MΩ

Resist interference: Reference input terminal can resist AC interference and instantaneous interference.

Preset range of constant current 2% ~ 100% of rated value of output current..

Constant current precision: Better than 1 %.

The TR has been provided with self-test function.

The TR has been provided with automatic switching function.

Recovery function: The rectifier of auto-control can still work at the protective potential which has been set before when power has been recovered.

On-off mode: The on-off test should be controlled locally and remotely to make rectifier enter into intermittent test stat©.(On- off time can be determined according to users' requirement)

Protection functions: Lightning protection, over current protection, overheating protection, fault protection, reversed polarity protection, etc.

Data communication interfaces: The TR can be equipped with various communication interfaces (eg. USB interface, point-to -point interfaces, RS485 interface, RS232 interface, etc) to transmit, storage, measure operation data remotely, such as potential signal, current signal, voltage signal. Through these interfaces, synchronous on-off test can be controlled remotely.

Indication: Each subcircuit has equipped with digital meters to display output voltage, output current protection potential and power supply, etc. The precision of digital meters are better than 0.5%. The discoloration indicators have been equipped to indicate each state.

Operation: Start and turn out and each operation mode have adopted switches and key-press operation

Load level: The load level of power supply shall meet the requirements of Grade I of GB/T 3859.1.

3.10 Enclosure: The enclosure is composed of explosion-proof control cabinet and oil-cooling cabinet, the surface of which is electrostatic painted with epoxy powder, to meet the protection category IP65.