Omicron Lab CT Analyzer User Manual page 183

901.xxx Warning [901.xxx] Protective earth (PE) connection in power supply cord missing.
Connect PE to equipotential terminal. Lethal voltage may occur on housing and all
terminals.
Reason:
Solution:
Comment:
903.xxx Warning [903.xxx] Excessive reverse power, don't disconnect any wires, don't switch
off mains, wait until power is dissipated.
ATTENTION: Lethal voltages on output terminals!
Reason:
Solution:
Safety action: All measurements are stopped until reverse power is dissipated.
904.xxx Error [904.xxx] Power supply error. Contact next Omicron service center.
Reason:
Solution:
Safety action: All measurements are stopped.
Earth wire break, no earth wire connected or device is supplied via an isolation
transformer.
The mains supply does not have reference to protective earth or protective
earth is not connected. The mains supply must have galvanic connection to PE.
If you are using an isolation transformer, connect one supply line of the
CT Analyzer to PE.
Warning: Lethal voltages may occur at the housing if the grounding terminal
of the device is not connected to protective earth potential!
Caution: If the mains supply is galvanically isolated from earth potential, the
device may become damaged.
If a galvanically isolated mains supply is used, voltage stress may occur for the
insulation system, the device is not constructed for. Safety is no longer
guranteed! Therefore, always use a mains power cord with a protective
earthing conductor connected to PE of the mains supply. Connect the
grounding terminal of the device to protective earth in order to prevent electric
shock caused by lethal voltages possibly present at the housing. If this error is
ignored, the device will probably work but safety is no longer guaranteed.
The device receives excessive reverse power so that the power output had to
be shortened to prevent overload of the internal output stage.
This error is displayed if an excess amount of energy is fed back into the
CT Analyzer. The CT Analyzer discharges the connected inductor with
approximately 20Ws, but depending on the connected inductance the
discharge process may take some time.
Warning: Lethal voltages of up to many kV may occur. Do not disconnect any
wires and do not switch off the CT Analyzer. Wait until the power is dissipated.
Temperature limit of secondary power supply exceeded.
It is not possible to acknowledge this error until the temperature is back in safe
limits. If this error occurs, please contact your next OMICRON service center.
Error and Warning Messages
181