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Generator controller - 24 V | Selco T8400 series
T8400 Series - Blackout Limiter of Littlefuse is used to monitor almost 4 generators. The T8400 Blackout Limiter makes the fast clearing of the blackout easy. It is useful for almost 4 generators with 1 unit and the 8 generators are enough for the 2 units. If the blackout occurs, the first generator is required to have more than 90% voltage to close the breaker of the generator. T8400 requires 24 Vdc signal over the 15 and 16 terminals to become active and this will be an indication of the blackout. Now all the generators will be checked and the first generator will contain more than 90 percent voltage to close the contact to the generator breaker. If the generator number 1 is the 1st generator with 90% voltage, this will take 1 second to complete the process. If the generator 2 is the first generator on the same voltage, the process requires 1.5 seconds. If the generator 3 acts as the first one, then the process requires 2 second. The addition of the second unit delays the time up to 3, 3.5, 4.5 seconds. 8 generators can be handled at a time. In case, the one of these generators has been switched on, the blackout signals 24 Vdc should be switched off.