This manual describes the functions, operation, installation, and commissioning of the device 7SJ62/63/64 V and for 7SJ63 V The functionality of the. Function overview. Description. Siemens SIP · 5 OvercurrentProtection/ 7SJ 5. 5/ 5/ Protection functions. • Time-overcurrent. of Siemens AG. Other designations in this manual might be trade- marks whose use by third parties for their own purposes would in- fringe the.

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Two-phase Time Overcurrent Protection Protection Operating Quantities The two-phase overcurrent protection functionality is used in grounded or compensated systems where inter- action of three-phase devices with existing two-phase protection equipment is required. The location and ratings of the miniature fuse F1 and of the buffer battery G1 are shown in the following figure.

A startup brings the machine from load operation into a temperature range far above the thermal restarting limit and the machine is stopped.

Siemens 7sj62 7sj6225 5eb90-1fe0/ff Fast

Hard- ware adjustments to the power system data might be necessary. It is essential in this case that all current transformers feeding the resistor whose current is measured at I have the same polarity. The following two tables list the jumper presettings. Page 44 Functions 2.

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A list with the desired infor- xiemens appears see Figure Based on the following information, it can also be determined which of the provided functions should be used. User-defined Functions cfc Technical Data 4. Page 86 Functions 2. This diagram allows the number of yet possible trips to be determined for tripping with equal tripping current. Reactance per Unit Length only for Fault Location The setting of the reactance per unit length is only important for the utilization of the line fault location siemmens.


The same applies to function groups 2 to 4. An object can also have specific properties.

In general, to optimize the operation of the inputs, the pick- up voltage of the inputs should be set to most closely match the actual control voltage being used.

If temperature siemend are used with 2-phase connection you must first determine the line resistance for the temperature detector being short-circuited. Undervoltage Protection 27 Functions 2.

Other designations in this manual might be trade- marks whose use by third parties for their own purposes would in- Release date Follow the procedure described 7su62 this section, whenever hardware modifica- tions are carried out. An operating cycles diagram see sample diagram in the functional description of the 2P procedureprovided by the manufacturer, shows the relationship of make-break operations and tripping current.

Page Page – A. This may be performed with secondary test equipment or other test equipment for checking continuity. Numerical overcurrent time protection and overload protection pages.


When setting the Power System Data 1 see Section 2. Grounding Grounding is the total of all means and measured used for grounding. Page 79 Functions 2. If the voltage cri- terion drops out during this time period about 60 msthe protection function does not pick up. 7sh62


Don’t have an account? In addition, the measured values are also constantly monitored for plausibility, therefore, the current transformer and voltage transformer circuits are largely integrated into the monitoring. Transformers and cable are prone to damage by overloads that last for an extended period of time.

If desired, fewer than 20 pairs can be entered. Connection diagrams indicating the terminal connections of the models of this device are included. Location Ambient Winding Bearing Other Angle correction F1, F2 for grounded system 0. An approaching inrush resets an already running dropout time delay. Consequently, the device starts monitoring.

It allows all tasks to be processed digitally, from the acquisition of measured quantities to sending com- mands to circuit breakers. Oscillographic Fault Records Functions 2. However, it 7sj622 prises important information that should be noted for purposes of personal safety as well as avoiding material damage.

Time Synchronization Interface