Good DCS

Brand New ABB3BSE023607R1 TY801K01 Module

Description

The high impedance differential protection principle has been used for many years and is well documented in literature publicly available. Its operating principle provides very good sensitivity and high speed operation. One main benefit offered by the principle is an absolute stability (that is, no operation) for external faults even in the presence of heavy CT saturation. The principle is based on the CT secondary current circulating between involved current transformers and not through the IED due to high impedance in the measuring branch. This stabilizing resistance is in the range of hundreds of ohms and sometimes above one kilo Ohm. When an internal fault occurs the current cannot circulate and is forced through the measuring branch causing relay operation. It should be remembered that the whole scheme, its built-in components and wiring must be adequately maintained throughout the lifetime of the equipment in order to be able to withstand the high voltage peaks (that is, pulses) which may appear during an internal fault. Otherwise any flash-over in CT secondary circuits or any other part of the scheme may prevent correct operation of the high impedance differential relay for an actual internal fault.

FAQ

1.What about the warranty?
All products have a 1 year warranty.
2.What is the delivery time?
Usually 1-3 Working Days
3.Other suppliers have better prices than you?
"It is our belief to create the greatest benefit for our customers.If you have a better price, please let us know.We will do our best to meet your price and support you.
4.How about the shipment?
We can arrange shipments at competitive prices such as DHL, FedEx, UPS, TNT, etc.
5.What are the payment terms?
Generally, T/T, Credit Card and Western Union are also accepted.

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