Panel Components & Systems, Inc. Multitek Phase Sequence Relay 1 Generator 1 Bus With Dead Bus FACility M200-PLD

The M200-PLL & PLD are synchronising check relays, also known as paralleling relays. They are used to ensure at two AC supplies are synchronised. For a system to be synchronised, frequency, phase angle and voltage have to within pre-set limits. The M200-PLL can monitor either mains bus bar and incoming generator or two generators. The PLL has customer adjustment of the differential voltage between 10 to 30%. This voltage corresponds to 6 to 20 electrical degrees. The unit compares the input voltage and phase relationship of the bus bar to that of the generator when the signal is within the pre-set limits, the relay energises. The M200-PLD operates as the M200-PLL but has the additional feature of the dead bus facility. This enables the relay to energise with a generator supply only, which is a common requirement when mains failure occurs. Features: UL, C-UL and CE approvals DIN rail mounted LED indicators provide an at-a-glance condition entire range of ANSI functions covered