Patent ID: 11889660
Assignee: SIEMENS AKTIENGESELLSCHAFT
Field: Measurement (Instruments)
Classification: CPC H  G | IPC F  G  H

Claim 6:
7. A method for operating a cooling device for an electrical installation, in particular for a converter system of an electrical installation of a rail vehicle, said method comprising:
detecting by a first temperature sensor a temperature of a coolant as a mass flow of the coolant enters a cooling path in which a power loss source is arranged, and flows in a transport direction;
detecting by a second temperature sensor in spaced-apart relationship in a transport direction to the first temperature sensor a temperature of the coolant upstream in vicinity of a passage of the mass flow through a region of overlap of the cooling path with the power loss source,
monitoring on the basis of the detected first and second temperatures of the coolant the presence of a failure of the mass flow of the coolant flowing through a cooling path;
determining by a computer device a temperature difference between the detected first and second temperatures of the coolant;
comparing the determined temperature difference with a limit value;
determining by the computer device a detection sequence of a temperature change of the coolant at measuring points of the first and second temperature sensors; and
comparing the detection sequence with a limit value.