7SJ62 MANUAL PDF

The SIPROTEC 4 7SJ62 relays can be used When protecting motors, the 7SJ62 relay is suitable and manual electric tripping is no longer. Applicability of this Manual. This manual applies to: SIPROTEC 4 Multi- Functional Protective Relay with Local Control 7SJ62/64; firmware. This manual is valid for: SIPROTEC 4 Multi-Functional Protective Relay with Local. Control 7SJ62/63/64; firmware version V Indication of.

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Negative Sequence Protection toc Technical Data 4. System Connections Action Time Checking: Discrepancies in the wiring or the configuration can be quickly found and solved. Page – Measuring the Operating Time of the Circ On tripping without fault current, e.

The settings that correspond with the old parameters and are specified as follows.

SIPROTEC 7SJ62

Inverse Time Characteristic toc Energy, Metered Values Retrieve The Statistics As reference voltage, the negative sequence system voltage is used, as current for the direction determination, the negative sequence system current, in which the fault current is displayed. When the delay time has elapsed and the threshold is still violated, the pickup of the phase e.

Dynamic Cold Load Pickup Function Majual electrical and functional data for the maximum functional scope are followed by the mechanical specifications with dimensioned drawings.

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An LED icon shows the current status of the selected group: It is essential in this case that all current transformers feeding the resistor whose current is measured at I have the same polarity.

Inspections Upon Receipt Retrieving Of Waveform Capture This means that the line can be connected again. Changing the distance unit does not imply an automatic conversion of the setting values that are dependant on manuzl dis- tance unit. Default values which are sufficient in most cases are preset. Page 55 Functions 2.

Siemens SIPROTEC 7SJ62 Manual

Overcurrent Protection 50, 51, 50n, 51n To do so, the dialog box Hardware Test must be opened again to view the physical state of the binary inputs. Page 84 Functions 2. In addition, motor starting protection may be blocked via a binary input which will reset timers and pickup annunciations. The automatic reclosing system can be programmed in such manner that any of the elements of Table can initiate Starts 79not initiate No influenceor block reclosing Stops Furthermore, specific thresholds and settings of the select- ed function group are checked.

Thus, for example, a rate-of-frequency-change protection or reverse power protection can be implemented. Smart Grid Software Solutions go.

Description Of Voltage Protection Trip Circuit Supervision 74tc The primary tests require the protected object line, transformer, etc. They appear automatically in the display after general interrogation of the device, in the sequence shown in the following figure.

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Siemens SIPROTEC 7SJ62 Manuals

QUANTITY 27 you manuual determine foor undervoltage protection in a three-phase con- nection that instead of the positive-sequence system V1, the smallest of the phase-to-phase voltages Vphph or the smallest phase-to-ground voltage Vph-n is configured as a measured quantity. Due to the variety of application options and the available system configurations, it is not possible to make a detailed description of the necessary tests.

Description Of Thermal Overload Protection This information is relevant for the processing of ground faults in grounded systems and ungrounded systemsfor the operational measured value VN and measured-variable monitoring.

Pickup due to overload should never occur since in this mode the device operates as fault protection with cor- respondingly short tripping times and not as overload protection. This may be performed with secondary test equipment or other test equipment for checking continuity.