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Connect the wires using 0. The table below can be used to determine: ANSI 50BF – Breaker Failure If breaker fails to trip when signaled, as detected by the fault current persisting, this backup protection sends a tripping command to the upstream radial or adjacent bi-directional breaker s.

Sepam S20, S23, S40 or S80 b no voltage and b bus voltage and b line voltage and Protection of 2 mains: The inputs may also be inverted for undervoltage type operation. Maximum demand currents can be cleared Voltage and Frequency The following measurements are available according to the voltage sensors connected: Sepam Series 80 sensor parameter setting.

SandhuRam Krishnan: Displayed as a percentage of rated thermal capacity. Remote indications depend on the type of Sepam application and can be re-assigned by Logipam.

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Sepam T81 Ground fault protection: Multi-tenancy authorization models for collaborative cloud iee. C2 Modbus communication port 2. In this way they make full use of Ethernet network performance and all IEC functions. Sepam shutdown to fail-safe position.


The list of the variables used and the cross references can be consulted during programming. Ia b Ib Measuring the three phase currents allows the calculation of residual current. Direct Sepam connection to the Ethernet network Sepam series 40 and Sepam series 80 units can be directly connected to the Ethernet network via the ACE communication interface.

Sepam M81 b motor ground fault protection: Reduced maintenance costs PE The Sepam range is designed to reduce maintenance time and cost for your protection system. University of Texas at San Antonio. It can be used to connect a set of communicating devices using the same communication protocol to a centralized supervision system.

Integrated provenance data for access control in group-centric collaboration. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. Flatten the connection cable against the metal frames of the cubicle. Sepam M87 Motor differential protection: Comments can be added for each section, and execution of each section can be subjected to conditions. Tahmina AhmedRavi Sandhu: Attributes, automation and adaptation.

The result of an equation may then be: A suffix letter or number may be used with the device number; for example, suffix N is used if the device is connected to a Neutral wire example: Local indications on the Sepam front panel. Parameter IN must be set 2 twice: Efficient, Easy-to-Use Software b menus and icons for fast, direct access to the data required b guided navigation to go through all the data input screens in the natural order b all data on the same function together in the same screen PE b trilingual software: Protection based on phase by phase comparison of the primary and downstream of a circuit breaker and allows closing when secondary currents with: Phase current RMS current for each phase, taking into account harmonics up to number Lower settings may be used to trigger alarms.


Out-of-Sync Context Storage of amplitude, frequency and phase differences between the 2 voltages measured by the MCS module anso a closing command is blocked by the synchro- check function. O4 is an indication output with one NO contact and one NC contact.

ANSI device numbers

U Function available on Sepam B80 additional voltage channel, according to the type ieew the additional voltage measured. The subsequent letters are: Two modules are available for the different input supply voltage ranges and offer different switching thresholds: ANSI 27 – Undervoltage Load Shedding Protection of motors against voltage sags or detection The “rate of change of frequency” protection function is used for load shedding in of abnormally low network voltage to trigger automatic combination with the underfrequency protection to: PE Characteristics Weight 1.

The function also blocks interrupting device closing, according to the operating conditions. Failure to follow this instruction can cause serious injury. Phase protection by self-balancing-differential scheme: Consider all sources of power, including the possibility of backfeeding b Turn off all power supplying this equipment before working on or inside it. It comprises an ground fault function associated with direction detection, and picks up if the ground fault function in the chosen direction line snsi bus is activated.