Siemens LDU11.523A27 control box

The Siemens LDU11.523A27 valve tightness test system is used with shut-off valves installed with gas burners and gas appliances. Voltage: AC 220V..AC 240V. Mains frequency: 50...60 Hz. Primary fuse: max. 10 A. Power consumption: AC 3.5 VA. Protection class: IP 40. Pre-purge time: 22.1 sec. Safety time: 27 sec. Time before ignition: 3 sec. Total test duration before burner start: 66.3 sec. Interval from start to main relay activation: 7.4 sec.