FIELD: monitoring devices.
SUBSTANCE: invention relates to means of monitoring parameters of industrial facilities – pipelines, cisterns and other hollow industrial facilities. Proposed method comprises power supply to electric heating system, initiation of controller K of control device and insulation monitoring relay of IMR and monitoring insulation of cable power supply lines of the system as per resistance of insulation. In case of faulty system cable line detection, disconnection of this line includes lamp "Accident" corresponding to indication in controller menu of corresponding cable line failure. After the performed operations, controller K is switched off and linear contactors KM1-KMn of electric power supply circuits of electric heating system of objects are switched on. Then, with the "Accident" signal on the insulation monitoring relay, the signal is read out and the following faulty electrical power supply circuits of the electric heating equipment are searched, wherein said search is performed by serial disconnection of linear contactors KM1-KMn and their sequential connection in reverse order till switching on last contactor KMn included in last power circuit of last electric heating means. Insulation monitoring of each subsequent electric power supply circuit of electric heating means is performed successively in the specified order, wherein in the case of the first power circuit proper operation, its disconnection is performed and proceed to the next power supply circuit and the circuit search, at which on the automatic circuit breaker there is a signal "QF1…QFn state is included". In case of availability of corresponding circuit breakers QF1…QFn in power circuits of the "QF1…QFn state" signal is switched off a flag is installed in zone of this circuit location, that electric power supply circuit electric power monitoring is not performed.
EFFECT: technical result is higher reliability.
1 cl, 1 dwg
| Title | Year | Author | Number |
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