Digital input

Digital output

Auxiliary systems running

Variac phase R protection tripped

Variac phase S protection tripped

Variac phase T protection tripped

Compressed air available

TDK-Lambda power supply ok

Light barrier and gate ok

DUT thermostat ok

Load thermostat ok

Start

Stop

Restore / Reset alarms

Operator confirm

System alarm LED

Enable 400 V line disconnector

Enable 450 V line disconnector

Inverter output contactor

Increase voltage (no-load test)

Decrease voltage (no-load test)

System ready LED

Test running LED

Operator confirm request LED

Inverter input contactor full power

Inverter input contactor no load

Triac input contactor

Variac input contactor

Transformer output contactor

No-load test contactor

R = 10 Ω insertion relay

Ohmmeter: ammeter connection

Ohmmeter: voltmeter connection

Yokogawa transducer 200 A

Yokogawa transducer 3 kA

DUT2 voltage sense inverter

DUT2 voltage sense triac ctrl

Rogowski integrator AC/DC mode

Rogowski integrator reset

Inverter cooling circuit

Triac and transformer cooling circuit

DUT cooling circuit

Load cooling circuit

DUT circuit draining

DUT circuit air injection

Load circuit draining

Load circuit air injection