CCT 41.4 RMS - Allstromwandler AC/DC
| 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
| Properties |
|---|
| Type-Name: | CCT |
|---|---|
| Type number: | 41.4 RMS |
| accuracy class: | 1 |
| ambient temperature: | -25 - +60 °C |
| bore: | Ø 31,95 mm |
| protection rating: | Housing IP 20 |
| storage temperature: | -40 - +90 °C |
| Width: | 90 mm |
| Height: | 115 mm |
| Length: | 58.5 mm |
| 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 |