CCT 41.4 RMS - Universal current transformer AC/DC

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CCT 41.4 RMS - Universal current transformer AC/DC

primary current

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measuring range	0…500 A DC / 0…500 A IRMS AC, variant-dependent! (rated current ranges set to standard values acc. to IEC)
frequency range	DC, or AC 20 Hz … 6 kHz, crest factor ≤ 4
current output	4…20 mA DC, true RMS measurement
Max. burden resistance at current output	RB ≤ 500 Ω (UH = 24 V DC)
Output signal limitation in case of overload	< 25 mA
accuracy	± 1,0 %
Max. operating voltage Um	0,72 kV, Ueff
insulation test voltage	6,4 kV, Ueff, 50 Hz, 5 sec., primary conductor against measuring output/housing
auxiliary voltage	24 V DC, ± 15 %, < 70 mA, external protection via fine fuse 250 mA / 250 V, fast!
step response time (90 % IPN, di/dt = 100 A / μs)	≤ 200 ms (typ. 150 ms)
signal rise rate di/dt	< 100 A / μs
insulating material class	E
protection class	IP 20
operating altitude	≤ 2000 m (DIN EN 61010-1)
Max. temperature of the primary conductor	100° C
operating temperature range	-25° C < TU < +60° C, 0…95% rel. humidity, no condensation!
storage temperature range	-40° C < TL < +90° C

Product information

Current transformer for measuring both direct and alternating currents

For current measurement of non-sinusoidal and distorted (continuous) networks
As current measuring transducer for direct input connection of PLC input cards

Applied technical standards:

DIN EN 50178, 1997
DIN EN 61010-1, 2002
VDE 0160

Electrical connections:

UH + 0 (Ground) IA
Spring-loaded terminal
Connection cross-sections: 0,08…2,5 mm²

Functions of the CCT 41.4 RMS:

The magnetic field surrounding a current-carrying conductor is detected by a measuring core enclosing the conductor. The magnetic flux induced in the measuring core, which is directly proportional to the current in the primary conductor, is detected by means of a semiconductor component. Control electronics integrated in the device convert the signal supplied by the semiconductor into a DC output current signal proportional to the true RMS value of the measured variable. The calculation of the true RMS values is performed using the delta-sigma method.
Due to the inductive, contactless detection of the measured variable, a galvanically isolated output signal is provided.
The electrical contacting of the secondary circuit of the current transformer is carried out via a 4-pole spring-loaded terminal. This terminal is suitable for connecting flexible stranded wires up to 2.5 mm².
A DC auxiliary voltage supply of 24 V DC is required to power the control electronics. The auxiliary voltage inputs must be protected by a 250 mA / 250 V / F fuse.

Advantages and benefits of the CCT 41.4 RMS:

Measurement of both direct and alternating currents possible with only one current transformer.
Accurate calculation of true RMS values of virtually any time course of the current to be measured.
Wide operating frequency range from 0 Hz (DC) or 20 Hz…6 kHz (AC).
High electrical safety due to galvanically isolated detection of the measured variable.
Low power requirement (≤ 2.5 VA)
Simple and safe electrical wiring using spring-loaded terminal technology.
Direct mounting on busbars via fastening screws integrated in the device.
Mounting on 35mm DIN rails possible using optionally available snap-on mounting.
High climatic and mechanical resistance due to PU potting of all electrical components.

3D models and more files to each product can be found in our download area downloadarea

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