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DENT Instruments’ CT-R47-A4-U Revenue Grade RōCoil™ Flexible Current Transformer is 47” in length with a 14.6” window size. The CT provides non-intrusive measurement of AC current over a wide range, pulsed DC, distorted waveforms as well as from 20 Hz to 5kHz.
The CT-R47-A4-U is a Rogowski style coil and therefore advantageous in certain applications where traditional rigid core CTs may be inapt. In addition to its wide current range and larger window size, the CT-R47-A-4U is ideal for use with conductors that are irregularly shaped, large bus bars and even cable bundles.
The CT-R47-A4-U is crafted for use with the PowerScout and ELITEpro XC series from DENT Instruments.
*Requires a customer-supplied integrator/amplifier, such as the one built into the ELITEpro XC and PowerScout series.
Length | 120 cm (47”) |
Window Size | 37 cm (14.6”) |
Output Signal | 131 mVAC/1000A @ 60 Hz 109.2 mV/1000A @ 50 Hz |
Current Range | 5 - 5000A AC* |
Accuracy (Typical) | < 0.6%** |
ELECTRICAL All accuracies specified at 20°C (±2°C) with RōCoil™ centered on conductor. | |
Output Signal | 131 mV/1000A @ 60 Hz 109.2 mV/1000A @ 50 Hz |
Wire Colors | White = (+) positive Brown = (-) negative Bare wire = shield |
Phasing | Arrow Points Towards Load |
Phase Shift | < 0.2° at 50/60 Hz |
Frequency Range | 20 Hz to 5 kHz* |
Useful Current Range | 5 - 5000A AC* |
Linearity | ± 0.2% |
Temperature Sensitivity | 0.07% per °C |
MECHANICAL | |
Coil Materials | Blue thermoplastic rubber, flame retardant UL 94 V-0 rated |
Coupling Materials | PA6 UL 94 V-0 rated |
Shielding | 100% transducer, 100% output lead |
Working Temperature | 20 °C to +70 °C (-4° to +158 °F) |
SAFETY | |
Working Voltage | 1000 Vrms maximum |
Dielectric Strength | 7400 VAC around coil 1000 VAC rated leads |
Certifications | Conforms to UL STD 61010-1 Certified to CAN/CSA STD C22.2 No. 61010 |
*Depending on meter compatibility. RōCoil CTs UL Rated to 100KA AC. ELITEpro SP/XC (v .212 or newer firmware) and PowerScout™ 3 and 24 (v. 3.16 or newer firmware) rated for 5-5000A. Meters with earlier firmware versions rated from 50-5000A AC. PowerScout™18 rated for 50-3500A.
**Installed using best practices with conductor centered in the CT window and ensure any external conductors are a minimum distance of > 2X the diameter of the RōCoil. Accuracy below 20A rated at 1.5% +/- 0.5A when used with DENT ELITEpro/PowerScout meters. RōCoil have been 100% verified to meet the C57.13-2008 Class 1.2 Standard.
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- • Large Bus Bars
- • Irregular Shaped Conductors
- • Cable Bundles
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