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  • Instrument transformer / medium-voltage / current / for indoor service
  • Instrument transformer / medium-voltage / current / for indoor service

AK 12

Article: 00038596

Instrument transformer / medium-voltage / current / for indoor service

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 600
Rated secondary current (A) 5or 1
Accuracy class of measuring core 0.1; 0.2S: 0.2:0.5S: 0.5 ¡1:3
Instrunent 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 5 or 10 or 15 or 20
Rated burden of protection core (VA) 1.25 up to 30
Number of cores up to 2
Rated frequency (Hz) 162/3:50:60
Rated thermal short-time current (kA) lth= 100 x In (max 120)/1 s
Rated dynamic current (kA) ldyn = 2.5 x1th
Class of insulation E
Weight (kg) 15
Cantilever strength (N) >5000
Maximum altitude of installation (m) up to 1000
Ambient temperature PC] - 5 up to ? 50
Specifications IEC 61869-1 & 2: DIN ¿2600
Capacitive voltage divider available upon request
Drawing Nr. 2110/12

Specifications

  • Type: instrument
  • Electrical characteristics: medium-voltage, current
  • Applications: for indoor service, protection
  • Other characteristics: frequency, secondary, primary
  • Current: Min.: 5 A
  • Electric power: 0.03 kVA (0.04 hp), 0.0013 kVA (0 hp)

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