ARM TI.
Load resistor cabinet for CT.
The ARM TI is a load resistor cabinet designed for Current Transformers (CT). It comprises a slotted enclosure containing 3 resistors and their respective terminal block, housed in a metal cabinet featuring ventilation (natural or forced, depending on the requested specifications), with connections protected by a sealable cover.
The cabinet is manufactured from sheet steel (lacquered or stainless, according to requirements) and features a 3 mm double-bit lock operated by a cam, sealed via a slotted screw to prevent unauthorized tampering.
It is designed for indoor service. Upon request, it can be manufactured for outdoor service, as well as in various other configurations.
Its function is to consume the necessary power to ensure the transformer operates between 25% and 100% of its rated accuracy burden. This applies in cases where the loads connected to the device (meters, relays, etc.) do not reach the minimum threshold required to guarantee measurement accuracy.