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MR & MPR PROTECTION RELAYS

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Transformer/Feeder Protection Relays
P&B has developed a wide range of Transformer/Feeder protection relays and controllers.

Product overview
For three phase O/C & E/F look at the Draw out MRI-IE or FEEDERVISION/MICRO-FEEDER for Non Draw out Protection Controllers. Transformer Differential (MRTD or MIRD-T), Restricted Earth Fault (MREF), Earth/Ground fault (MR-IE, MRI-E, MRI-EX & MSP-E), Voltage (MSP-V, MRVT, MSP-UV & MSP-OV), and Auto Reclose (MRAR) is available from the MR range.

VTm
The VTm is a Patented version of Feedervision that gives the user a Voltage Times multiplier reference to the normal O/C and E/F Standard, Very & Extremely Inverse characteristics. This makes a relay that is ideal for Utility closed ring applications.

Cyclic temperature ageing