For more information, to get an official quote and video contact Industrial Sol Pte Ltd Singapore 5 Soon Lee Street, Pioneer Point - isolonline QSO217 IZN GEC Alsthom MFAC14c1aa0001a high impedance bus differential relay GEC Alsthom T D Protechtion Control Limited. MFAC relays provide high speed differential protection for various types of power systems plants including generators, reactors, busbars, motors and the individual windings of power transformers. The relay measuring element is an attracted armature unit of simple and robust construction, supplied from a bridge rectifier. Settings are determined by a series of resistors, selected on a seven-way plug bridge. Relays with a fine control facility have an additional plug bridge, which is calibrated in intermediate settings. An overall setting is obtained by adding together each plug bridge reading. A capacitor is connected in series with the operating coil to make the relay insensitive to the DC component of fault current. The setting voltage can thus be calculated in terms of RMS alternating quantities, without regard for the degree of offset produced by the point on wave at which the fault occurs. A reactor connected in series with the capacitor forms a resonant circuit tuned to the relay rated frequency. Have Some Marks. Condition and Details: This is a Used Item in Good condition Not In Original Packing not Sealed No Accessories / Cable or probe Shipping: Usually we ship same business day, subject to clear funds into our account Standard order processing time is 4 business days Item will be packed as per International Standard, International Orders: DHL / SINGPOST * Expedited shipping is available for an extra fee. * International buyers pay all custom, duties, taxes brokerage fees. Warranty and Returns: Warranty: 30 DAYS Money Back or Replacement, buyer pays return shipping. Product Returns: Return to Base Warranty Any type of power failure / burn / physical damage / tempered seal will void the warranty. Payment: Payment Methods: PayPal Credit Cards Wire-transfer: contact us for payment instructions. International buyers without PayPal: contact us before bidding. About Us: We deal in Semiconductor Wafer Handling Parts/Components/machinery and equipment's. A Verity of Industrial Automation Equipment's and Parts. Industrial PCs, PLCs, HMI, Controllers and Sensors. Industrial robotics, Data Acquisition and Test Measurement. Industrial Single Board Computers. Marine Parts / Equipment's. Lab and Research Equipment's. We Source, We refurbish, We Service and We also Repair ?please contact for any further detailed inquiry.