DENT’s RoCoil line of Rogowski Coil CTs offer significant advantages over conventional Split Core or Clamp-On CTs in certain installations. These “rope-style” Current Transformers deliver “installer-friendly” features such as large window size, light weight, wide current range, and mechanical flexibility for mounting in tight quarters. RoCoils provide accurate, non-intrusive measurement of AC current combined with easy placement around cable bundles, large bus bars and irregular shaped conductors. They are available in three models: RoCoil™, RoCoil mV™ and the FLN 3000A™ Series. See the details of each below.

RoCoil™
Lengths: 16", 24", 36"

RoCoil mV™
Lengths: 16", 24", 36" and 72"

3000A Flex CTs
Length: 36"

Designed for use with DENT’s PowerScout networked power meters. Also available as a bare Rogowski-type sensor, where the CT produces an Output Signal (di/dt) of 131mVAC per 1000A at 60Hz (110mVAC/1000A @ 50Hz). The units may require a customer-supplied integrator/amplifier.

Standard Features:

• Available in 16", 24", and 36" lengths
• Lightweight, flexible alternative to conventional CTs
• Broad Amperage range from 25-3500A
• Accuracy and Phase Shift error < 1%
• Excellent Linearity of +/- 0.2%

Like its name implies, the RoCoil mV produces a millivolt output for use with DENT’s ELITEpro and DATApro Series dataloggers. Available in standard lengths up to 72” and current ranges up to 6000A. The RoCoil mV requires 5-24V dc, which can be supplied from the Line-Powered ELITEpro or optional external power supply.

Standard Features:

• Available in 16", 24", 36", and 72" lengths

• 1000A, 2000A, 3000A, and 6000A ranges
• Max Output of 1.66VAC for use with other manufacturers' meters and data loggers

The DENT 3000A Flexible Current Transformer is composed of a battery-powered flexible sensor and integral battery-powered amplifier/integrator electronics module. It offers a unique, switch-selectable 300/3000A dual measurement range.

Standard Features:

• Measure from 10 Amps to 3000 Amps
• Dual range switchable between 300A and 3000A
• 36" length
• Battery life is ~4,000 typical (8,000 hours maximum)

RoCoil™ (pdf) Documents:

• RoCoil™ Data Sheet
• Rogowski Coil Application Note
• Rogowski Coils: Priciples of Operation

RoCoil mV™ (pdf) Documents:

• RoCoil mV™ Data Sheet

• RoCoil mV Power Options Performance Update

• Rogowski Coil Application Note

• Rogowski Coils: Principles of Operation

3000A Flex CT (pdf) Documents:

• 3000 Amp Flexible CT

• Rogowski Coil Application Note

• Rogowski Coils: Principles of Operation