Differential protection relay SIPROTEC 7SD80
voltageoverloadphase comparison

differential protection relay
differential protection relay
differential protection relay
differential protection relay
differential protection relay
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Characteristics

Measured/monitored value
voltage, overload, phase comparison, temperature, trip circuit
Applications
transmission line
Mounting
panel-mount
Other characteristics
digital, programmable, differential, configurable, with integrated transformer

Description

The line differential protection SIPROTEC 7SD80 has been conceived for selective line protection of power cables and overhead lines up to 24km for all kind of starpoint configurations. The implemented phase comparison algorithm is a fast and stable method for line protection in industry and distribution grids. The protection interface communication is carried out directly without external equipment over copper wires, optical fibers or both in redundancy. The wide scope of non directional and directional functions can be applied miscellaneously as emergency functions as well as backup functions. For instance, the SIPROTEC 7SD80 enables simplified and cost saving concepts for meshed grids and busbar protection by means of reverse interlocking. Features Fast and selective tripping is guaranteed even if the communication fails between the relays. The scope of functions includes protection functions as well as functions for control and monitoring. The interoperable connectivity to substation control systems is give by standard protocols like IEC 61850. The general concept of redundance for protection and its communication gets completed by Ethernet redundancy protocols (PRP, HSR, RSTP) and thus increases the total system availability. Integrated functions for commissioning help and easy settings lead to short commissioning times. Hardware •4 current transformers •0/3 voltage transformers •3/5/7 binary inputs (thresholds configurable using software) •5/8 binary outputs (2 changeover) •1 life contact •Pluggable current and voltage terminals.

Catalogs

*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.