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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Programming Settings For Tripping Logic Protection for Rail Electrification go. You work with data which are stored in files.

Program Execution Functions 2. If the frequency lies outside the allowable range, appropriate actions are initiated, such 7sm62 load shedding or separating a generator from the system.

Negative Sequence Protection Fault Locator Functions 2.


Oscillographic records obtain the maximum information about the behaviour of the protection. Depending on the temperature unit selected in the Power System Data Section 2. Motor Starting Protection 48 Inverse-time Overcurrent Protection 51 n Page 94 Functions 2. Changing this parameter also results in a polarity reversal of the ground current inputs I or I Figure Direct Serial Connection Direct connection of the front operator interface or the rear service interface of the device with the serial inter- face of the operator PC.


Communication branch A communications branch corresponds to the configuration of 1 to n users which communicate by means of a common bus. Retrieval Of Information The load current the line carries must be at least 0.

SIPROTEC 7SJ62 – Digital Grid – Siemens

The key C causes the control display to appear in the LCD. Page 72 Functions 2. Saving on maintenance and servicing costs is one of the main benefits this functionality offers. In order that the minimum voltage for controlling the binary input is ensured, R is derived as: To do so, the dialog box Hardware Test must be opened again to view the physical state of the binary inputs.

Therefore, tripping can be time-graded depending on how severe voltage collapses are. Inverse-time Overcurrent Protection 51 And 51n Elements The user can create up to 20 flexible protection functions. The feedback information of the circuit breaker position injected via binary inputs is read out at the device and compared with the actual breaker position.

Negative Sequence ProtectionTechnical Data 4. Page 61 Functions 2. Failure of the measuring voltage in one or two poles can be detected, and the directional time overcurrent elements Dir Phase and Dir Ground can be blocked see logic diagrams. If synchronism prevails the system is en- ergized, with asynchronous conditions it is not.


For Phase Faults Polarization With cross-polarized voltages; Overcurrent and Feeder Protection go.

Siemens SIPROTEC 7SJ62 Manual

Thus, for example, a rate-of-frequency-change protection or reverse power protection can be implemented. Page 88 Functions 2. This measurement method processes the sampled values of the current and filters in numerical order the fundamental harmonic so that the higher harmonics or transient peak currents remain largely unconsidered.

The time delay resets immediately in anticipation of another pickup. Tripping is thus not possible. Panel Surface Mounting The following two tables list the jumper presettings.

Event Log operating Messages Line Differential Protection go. Inverse Manhal, Directional Overcurrent Protection toc, 67n-toc The standard connection is A, B, C, Gnd.