CCS CTRC Series Rogowski Coil Current Transformers

The CTRC Rogowski coil current transformers are accurate, flexible, rope-like current sensors that can be connected around conductors.

Part Number: CTRC

Manufacturer:

Grouped Product 4Types Available

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Flexible Rogowski Current Transformer

Flexible Opening
Excellent Linearity
Low Phase Angle Error
Window Diameters: 3.1, 4.5, 7.5, or 12 Inches
From 250 to 6000 Rated Amps

Easier AC Current Measurement

The CTRC Rogowski coil current transformers are accurate, flexible, rope-like current sensors that can be connected around conductors. They greatly simplify AC current measurements of conductors where traditional split-core and solid-core CTs are difficult to use. With its flexible design, the CTRC is perfect for large bus bars and irregular-shaped conductor bundles. In addition, the coil’s small profile allows it to fit into tight spaces where rigid CTs won’t fit.

Fully Compatible with WattNode® Meters

Sold individually, the CTRC coils can be used for single-phase and three-phase services. The output of the CTRC’s flexible coil is connected to a conditioning circuit, where it is converted to a low-voltage (333.33 mVac) signal which is compatible with any WattNode meter.

Complete Solution

Four standard models are offered covering various conductor sizes and currents up to 6000 Amps. Non-standard currents ranges are available as custom orders.

Safe: burden resistor built-in, 333 mVac voltage output at rated full scale current, no shorting blocks needed
Low phase angle error: essential for accurate power and energy measurements
Approvals: UL Recognized, CE Mark, RoHS

Power Supply

A DC power supply is required for the CTRC conditioning circuit.
Power requirements CTRC: 10 – 30 Vdc (12 Vdc or 24 Vdc recommended), 50 mA typical, 70 mA maximum

Note: New RCSL/RCLL accepts 3.5 to 13.5VDC (Not 24VDC)

One supply will power multiple conditioning circuits.
Plug Pack Type: AC-SENS-1 12VDC (5 circuits)
DIN rail Type: PSW-10-F 24VDC (14 circuits)

DIN Rail Type: MP3155 12VDC

PLEASE NOTE: The manufacturer is in the process of phasing out older CTRC models. Please refer to the Compatibile Models Tab to find the relative new model for your existing coil.

Specifications

Type: Flexible Rogowski coil current transformer with conditioning circuit

Electrical

Output wires: 8 feet (2.4 m), 22 AWG, white / black twisted
- May be extended to 100 feet (30 m)
Optional: up to 100 feet (30 m)
Frequency: 50/60 Hz nominal
Maximum voltage: 600 Vac
Maximum safe amperage: >10,000A. Unlike conventional CTs, Rogowski coil CTs have negligible secondary current (typically less than one microamp) and very low secondary voltages (typically less than 100 mVac), so even during extreme overcurrent, the secondary voltage, current, and power dissipation will all be very low.
Measurement category: CAT III, 600 Vac
UL recognized: file number E344623 (PICQ2), UL standard 61010B-1

Accuracy

All measurements at 77°F (25°C) and 60 Hz unless otherwise noted.

Accuracy: ±1.0% of reading from 5% to 120% of rated primary current
Conductor position sensitivity: Additional error due to the location of the conductor within the coil

Family	Center	Edge	Latch
CTRC-03100	No added error	±1.5%	±5.0%
CTRC-04500	No added error	±1.0%	±4.0%
CTRC-07500	No added error	±1.0%	±4.0%
CTRC-12000	No added error	±1.0%	±3.0%

External conductor sensitivity: ±2.0% of full-scale maximum (to clarify, if an external conductor carrying this CT’s rated current is just touching this CT, then the output of this CT may change by up to ±2.0% of the rated current)
- CTRC-03100 models only: ±2.5% of full-scale maximum

Positioned at corner: ±1.0% maximum (if the CT is installed at a sharp bend of the conductor being measured)
- CTRC-03100 models only: ±2.0% maximum
Additional error due temperature variation: ±1.5% from -4°F to 140°F (-20°C to 60°C)

Phase Angle

Phase angle: ±0.50 degrees (30 minutes) from 5% to 120% of rated current
Conductor position sensitivity: ±0.10 degrees max
External conductor sensitivity: ±0.25 degrees max
Positioned in the corner: ±0.10 degrees maximum
Varying temperature: -4°F to 140°F (-20°C to 60°C): ±0.10 degrees

Conditioning Circuit

Output at rated amps: 333.33 mVac (one-third volt)
Maximum output: 1.3 Vac
CTRC Power requirements: 10 – 30 Vdc (12 Vdc or 24 Vdc recommended), 50 mA typical, 70 mA maximum
RCSL/RCLL Power Requirements: 3.5 Vdc to 13.5 Vdc (5 Vdc or 12 Vdc recommended), 6 mA typical, 20 mA maximum

Environmental

Operating temperature: -4°F to 140°F (–20°C to 60°C)
Operating humidity: Non-condensing, 5 to 90% relative humidity (RH)
Pollution: POLLUTION DEGREE 2
Indoor use: Suitable for indoor use.
Outdoor use: Suitable for outdoor use when mounted in a NEMA 3R or 4 (IP 66) rated enclosure.

Warranty

5 Year limited warranty. See manual for details.

Safety Note

Warning: Hazardous Voltages - Only qualified personnel or licensed electricians should install the WattNode meter and current transformers.

Flexible Rogowski Current Transformer

Flexible Opening
Excellent Linearity
Low Phase Angle Error
Window Diameters: 3.1, 4.5, 7.5, or 12 Inches
From 250 to 6000 Rated Amps

Easier AC Current Measurement

Fully Compatible with WattNode® Meters

Complete Solution

Four standard models are offered covering various conductor sizes and currents up to 6000 Amps. Non-standard currents ranges are available as custom orders.

Safe: burden resistor built-in, 333 mVac voltage output at rated full scale current, no shorting blocks needed
Low phase angle error: essential for accurate power and energy measurements
Approvals: UL Recognized, CE Mark, RoHS

Power Supply

A DC power supply is required for the CTRC conditioning circuit.
Power requirements CTRC: 10 – 30 Vdc (12 Vdc or 24 Vdc recommended), 50 mA typical, 70 mA maximum

Note: New RCSL/RCLL accepts 3.5 to 13.5VDC (Not 24VDC)

One supply will power multiple conditioning circuits.
Plug Pack Type: AC-SENS-1 12VDC (5 circuits)
DIN rail Type: PSW-10-F 24VDC (14 circuits)

DIN Rail Type: MP3155 12VDC

PLEASE NOTE: The manufacturer is in the process of phasing out older CTRC models. Please refer to the Compatibile Models Tab to find the relative new model for your existing coil.

Rogowski Coil Current Transformer 400 Amp - CTRC-03100-0400

Part Number: CTRC-03100-0400

$513.00 ex GST

Qty:

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Rogowski Coil Current Transformer 1000 Amp - RCLL-4.7-1000

Replaces old version CTRC-04500-1000

Part Number: RCLL-4.7-1000

$378.00 ex GST

Qty:

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