Areva, Electronic Edition. — 6 pages.
На английском языке.The MiCOM P437 Distance Protection Device is used for selective short-circuit protection, ground fault protection (UK: earth fault) and overload protection in medium, high and extra high voltage systems. The systems can be operated as solidly grounded, low impedance grounded (UK: solidly earthed/resistance earthed), resonant grounded (UK: Petersen Coil) or insulated neutral systems.
All main functions are individually configurable and can be disabled or enabled by the user as desired. By means of a straight forward configuration procedure, the user can adapt the device flexibly to the scope of protection required in each particular application. Due to the powerful, freely configurable logic of the device, special applications can be accommodated.Table of Contents:Fault detection logic.
Phase-selective overcurrent detection.
Ground fault detection with adjustable neutral-point treatment for ground fault determination.
Phase-selective undervoltage detection.
Phase-selective angle-dependent underimpedance detection with adjustable load blinding.
Distance measurement.
General.
Data preprocessing.
Directional measurement.
Impedance measurement.
Zone decision.
Fault Locator.
