multict KBR

Core balanced current transformers

Measure, Current transformer

multict KBR has a split measuring core and can be ordered for primary rated currents between 50 A and 1000 A, secondary rated current 1 A and 5 A, in accuracy classes 0.5, 1, and 3.

The split measurement system enables easy subsequent installation in already existing systems with minimal installation effort.

To install, the transformer’s locking mechanism is opened, it is laid around the primary conductor, and pushed back into place with an audible click. The measuring assembly is ready to use immediately after connecting the secondary conductors.

The “click” system combined with the fixing clips makes it possible to install “singlehandedly”

Application

Core balanced current transformers are mainly used in subsequent installation to prevent the primary conductors from separating.

Highlights

Technical Data

For retrofitting without disconnecting the primary circuit.

Safe and easy attachment
Suitable for use in places that are hard to reach or have limited space, thanks to its dimensions and easy handling
Can be installed “singlehandedly” thanks to the “click” system
Secondary current 1 A or 5 A

Maximum operating voltage U_m		0.72 kV
Rated continuous thermal current I_cth		1.2 x I_n (KBR 18, 32, 44); 1.0 x I_n (other models)
Rated short-time thermal current I_th		60 x I_n , 1 sec (max. 100 kA)
Rated surge current I_dyn		2.5 x I_th
Overcurrent limiting factor		FS 5 bzw. FS 10 (depending on type)
Rated frequency		50 (60) Hz (16 ²/₃ bis 400 Hz by request)
Insulation class		E
Insulation test voltages		3 kV, 1 min, U_eff , 50 Hz (U_m ≤ 0.72 kV)
Working temperature range		–5 °C ≤ T ≤ +50 °C
Storage temperature range		–25 °C ≤ T ≤ +70 °C
Applied norms		DIN EN 61869/1+2, DIN 42600-1, DIN 42600-2
Unbreakable plastic housing made of polyamide
Flame-resistant and self-extinguishing in accordance with UL94-V0
Nickel-plated secondary clamps with plus/minus screws (2 Nm)