Current transformer Al 12

current transformer
current transformer
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current, instrument
protection, for indoor service
Electrical characteristics
Other characteristics
primary, secondary

Max.: 2,500 A

Min.: 5 A


We produce supporting type current transformers for indoor installation. They contain up to five cores for revenue metering and protection purposes, constructed from high quality siliceousor nickel steel laminations. All active parts are altogether impregnated with cycloaliphatic outdoor resin. In case 1:2 reconnection is requested, thiscan be achieved either by mounting reconnection bars to the primary terminals, or by an intermediate terminal at the secondary coil. Each terminal of the secondary coil can be grounded individually directly to the metal base through a bolt. These types aremaintenance free,and with respect to their main dimensions many types correspond to the German standards DIN 42600. Highest voltage for equipmet |kV) :12 Rated insulation level (kV) :12/28/75 Rated primary current (A) :5 up to 2500 Primary reconnection (A) :2x5upto2x 1000 Secondary tap :upon request Rated secondary current (A) :5 or 1 Accuracy class of measunng core :0.1 :0.2S:0.2:0.5S;0.5:1:3 Instrument security factor :5 or 10 Rated burden of measuring core (VA) :1.25 up to 30 Accuracy class of protection core :5P: 10P Accuracy limit factor :5or 10 or 15 or 20 Rated burden of protection core (VA) :1.25 up to 30 Number of cores :up to 3 Rated frequency (Hz) :162/3:50:60 Rated thermal short-time current [kA] :lth= 100x In (max 120)/1 s Rated dynamic current (kA) :Idyn = 2.5 x Ith Class of insulation :E Weight (kg) :20 Cantilever strength (N) : >5000 Maximum altitude of installation (m) :up to 1000 Ambient temperature C° : 5 up to + 50 Specifications :IEC 61869-1 & 2 : DIN 42600: ANSI: BS etc. Capacitive voltage divider : available upon request Drawing Nr. : ZN 2111/12-ZN 2115/22


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