Clip-on AC current probes | RCTi | RCTi3ph
For true rms and high accuracy in single phase and three phase systemsThe RCTi and RCTi3ph current probes convert ac current to an isolated 0.333V, 5V voltage or 4-20mA current loop. Conditioner options allows compatibility with 1A or 5A energy meters
Description
The RCTi flexible current probe convert ac current to an isolated 0.333V, 5V voltage or 4-20mA current loop. Optional conditioners allow compatibility with existing 1A or 5A CT metering circuits. Both offer a choice of proportional (rms) and instantaneous outputs. The available RCT ac current ranges are 0-100A to 0-50,000Apk. Both RCTi and RCTi3ph provide accurate measurement over a wide bandwidth ensuring precise measurement even with harmonically distorted waveshapes - using a flexible clip-on sensing coil. The RCTs are available as single and three phase models.
The RCT current probes provide all popular process control voltage and current loop outputs along with custom output options. Because the ac current probes are flexible split core, installation is possible without shutting down the electrical supply - saving down-time costs. Typical applications are retrospective energy monitoring in shopping centres, factories, offices, automated control systems like PLC, SCADA Data logging systems. Where accurate power, energy and ac current monitoring is important. Typical loading situations are factories, shops, offices, ac/dc VFD drives, ultrasonics, welding, power conversion and power distribution. For all RCTi / RCTi3ph models, a NIST/NPL (UKAS) traceable calibration certificate and certificate of conformance is supplied. All RCT ac current probes use UL94V0 or CSA approved materials.
- Available as single RCTi or three phase RCTi3ph
- Isolated measurement output
- 0-5V (7.07pk ) into 1kohm or 4-20mA outputs
- 2kV insulation continuous (tested 4kV) / 10kV optional (tested 15kV)
- 1% accuracy from 5%-150% of range
- Bandwidth 0.6Hz to 1MHz
- Operation to 150% FS 10.6Vpk
- 12, 24, 48, 125Vdc or 110Vac, 220Vac power supply options, see *
- Operating range -5℃ to +65℃
- Available sense coil lengths 300, 500 or 700mm
- 3.5mm or 8mm thick sense coil
- Safety EN61010:2001
Specifications:
- Rated current (rms): 250Arms to 50kArms
- Rated output (Full scale FS): 5.0Vrms (±7.07V peak)
- Supply voltage (wide input): 12Vdc(-10%) to 24Vdc(+20%)
- Maximum input power: 0.4W
- Output limit: 150% FS (±10.6Vpk)
- Operating temperature range:
–5℃ to +65℃ (Integrator electronics)
–20℃ to +80℃ (Coil and cable) - Bandwidth (-3dB):
<2000A: 0.6Hz to 1MHz (300mm)
>2000A: 0.2Hz to 1MHz (300mm)
600kHz (700mm) - Phase shift @50Hz:
<2000A: 0.9±0.1 degrees
>2000A: 0.4±0.1 degrees - Accuracy (typ.): ±1.0% of reading (5% to 150% FS, 25℃)
- Output load: >10kohm
- Coil Length: 300mm, 500mm or 700mm (Custom lengths available)
- Cable Length (coil to integrator): 1m standard or 2.5m (Custom lengths available)
Others:
- Traceable calibration (certificate included)
- No magnetic materials means excellent linearity < 0.1% reading
- Fully isolated measurement
- Isolated power supply 2kVdc
- Coil rated at 2kVpeak (withstand test is 4kVrms / 50Hz / 60sec)
- Small DIN rail (or panel mount) enclosure: UL94V-0 rated
Further information:
RCTi/RCTi3ph Dimension DrawingApplications:
- Ideal for large AC currents in generators, motor drives and power supplies.
- High current, high frequency sinusoidal current measurement.
- Accurate measurement of large load currents, in big conductors in the 10kA to 100kA range.
- Measuring the current waveform in 6 / 12 pulse high power rectifiers
- Real-time current reporting with BMS, PLC and SCADA integration
- Easy retrofit measurement for automating and improving efficiency in factories and buildings
- High current and di/dt fault measurement in a small noise immune lightweight, low cost packaging
- Ease of installation for permanent installation with good accuracy at 50/60Hz and higher harmonics.
- Low Frequency Bearing Currents
- Useful for power metering, protection and control feedback
- Renewable energy monitoring system like, solar, battery or wind
- Industrial Automation and control systems
- Ease of installation and wide-bandwidth allows RCTi to be used in a wide variety of grid and ultility applications.
| Ordering Code Info | ||||||||
|---|---|---|---|---|---|---|---|---|
| Description |
Model | Current Range(A) | Output | Power Supply | Cable Length (m) | Coil Circumference Length (mm) | ||
| 1000A input range, 1A output with 24Vdc power, 300mm coil and 1m cable length | RCT1A/ | 1000A / | 1A / | D24 / | 1 / | 300 | ||
| 500A input range, 0-5V output with 12Vdc power, 300mm coil and 1m cable length | RCTi/ | 500A / | 5V / | D24 / | 1 / | 300 | ||
| 5000A input range, 0-5V output with 24Vdc power, 500mm coil and 1m cable length | RCTi3ph/ | 5000A / | 5V / | D24 / | 1 / | 500 | ||
| 2500A range, 0-5V output with 12-24Vdc power, 500mm coil and 1m cable length | RCTi3ph/ | 2500A / | 5V / | D24 / | 1 / | 500 | ||
| 4000A range, 0-5V output with 12-24Vdc power, 200mm 3.5mm mini coil (M) and 1m cable length | RCTi3ph/ | 4000A / | 5V / | D24 / | 1 / | 200M | ||
-NEW-
Optional 3.5mm diameter 100, 200 or 300mm sense coils
* to meet CE / UL safety requirements, an external power adapter is supplied for 125Vdc, 110Vac and 230Vac options
* All products have CE, IEC, EN, ASME or BS approvals.
Options:
- IP65 die-cast aluminium panel mount enclosure (previously known as the IRF)
- Isolated BNC-BNC cable split option between coil and electronics to enable ease of installation e.g. threading through existing conduit. Standard cable permanently fixed.
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