Glossary of Electrical Terms in English — M
M
Magnetic circuit — magnetic circuit
Magnetizing current — magnetizing current
Magnetizing shock — pressure of the magnetizing current
Magnetizing push limiter — push the brake
Magnetoelectric relay — magnetoelectric relay
Magneto-hydrodynamic thermal power plant (MHD power plant) - magnetohydrodynamic power plant (MHD power plant)
Magnetomotive force — magnetomotive force
Degree of disturbance — the degree of violation of the regime
Main bus — a working bus system
Main generator - the main generator
Basic protection - basic protection
Mains voltage — mains voltage
Maintenance - operation (maintenance)
Support tests — performance tests
Maintenance — ongoing repair
Make and break — switching
Interruption time - time of pause without current in automatic reclosing
Make time — Total power-on time
Realization of capacity — power on
Minor operation - false action
Piloted substation — substation with service personnel
Manual close — manual close
Manual opening — manual shutdown
Manual adjustment — manual adjustment
Master controller — central regulator
Master substation — reference substation
Matching transformer - matching transformer
Maximum asymmetric short-circuit current — maximum value of asymmetric short-circuit current
Overvoltage Relay — Overvoltage Relay
Mean deviation - mean deviation
Mean squared error
Mean Time Between Failures — Average time between failures
Average value (per periodic quantity)
Measuring relay — measuring relay
Measuring coil
Mechanical durability — mechanical resistance
Medium voltage - medium voltage
Medium Voltage Coil — Medium Voltage Coil
Megger — megohmmeter
Men on duty — personnel on duty
Mercury contact — silver contact
Network (of a system) — a ring line with multiple feeds
Grid system — a complex closed electrical network
Line Current Method — Current Cycle Method
Mesh network — closed loop
Metal cable — reservations for cables
Metal Clad Assembly — Complete Switchgear
Dosing coil
Distance relay MHO type
Microwave pilot protection system
Middle position - middle position
Mimic diagram (wall diagram) — mnemonic diagram
Mismatch — discrepancy
Installation - installation
Movable contact - Movable contact
Moving coil — moving coil
Moving Coil Relay — A moving coil relay
Moving part - moving part Motor protection - motor protection
Multiple line-multiple (branched) line
Multi-layer assembly - multi-layer assembly
Multiple ground fault — multiple ground fault
Multiple Reclose — Repeated Auto Close (AR)
Multi-position relay — multi-position relay
Multisection coil — multisection coil
Multiple recloses — multiple recloses
Multi-terminal line — branched line
Multi-winding transformer — a transformer with many windings