Description
The M200-PLD is a synchronising check relay, also known as paralleling relay. They are used to ensure that two AC supplies are synchronised.
For a system to be synchronised, frequency, phase angle and voltage have to within pre-set limits.
The M200-PLD can monitor either mains bus bar and incoming generator or two generators. The PLD 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.
A full range of relays is available on our main site. For enquiries please contact sales@multitek-ltd.com
