Dent CT-RMV-36-3000-U Current Transformer

Model: CT-RMV-36-3000-U

Dent CT-RMV-36-3000-U Current Transformer

Model: CT-RMV-36-3000-U

36in RoCoil mV Flexible (Rogowski) Current Transformers. 60 to 15,000A.

36in RoCoil mV Flexible (Rogowski) Current Transformers. 60 to 15,000A.

This product has been discontinued. Click here for the replacement model(s).


DENT Instruments CT-RMV-36-3000-U Offers

Like its name implies, the RoCoil mV produces a millivolt output for use with power meters without a built-in amplifier/integrator circuitry. These CTs are available in standard lengths up to 72" and current ranges up to 6000A AC. The RoCoil mV requires 5-24V DC for operation, which can be supplied from a 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 manufacturer's meters

DENT Instruments CT-RMV-36-3000-U Specifications

The Dimensions for RoCoil mV CTs
Dimensions RMV-16 RMV-24 RMV-36 RMV-72
A - Window Size 13 cm(5") 19 cm(7") 26 cm(10") 56 cm(22")
B - Transformer Coil O.D. 15 cm(6") 21 cm(8") 29 cm(11") 58 cm(23")
C - Transformer Length 40 cm(16") 60 cm(24") 90 cm(36") 180 cm(72")
D - Locking ConnectorO.D. 3.6 cm(1.4")
E - Transformer Coil Diameter 1.5 cm(0.6")
F - Wire Lead Total Length 2m(80")
G - Length of mV Module 9.5 cm (3.8")
H - Width of mV Module 3.2 cm (1.3")

Key Specifications

Four Lengths 40 cm (16"), 60 cm (24"), 90 cm (36"), 180 cm (72")
4 Window Sizes 13 cm (5"), 19 cm (7"), 26 cm (10"), 52 cm (20")
4 Current Ranges* 16", 1000A, 10-1300A AC
24", 2000A, 30-2600A AC
36", 3000A, 30-3900A AC
72", 6000A, 60-6000A AC
Output Signal 333 mV AC at rated current
Max output 1,665 mVAC
Accuracy < 1% typical at 2% to 500% of rated current

*Depending on meter compatibility. See ELITEpro™ and PowerScout™ specifications for details.

Electrical

All accuracies specified at 20°C (±2°C)with RoCoil mV™ centered on conductor.

Output Signal (16") 333 mV @ 1000A
(24") 333 mV @ 2000A
(36") 333 mV @ 3000A
(72") 333 mV @ 6000A
1665 mV @ 5000A
999 mV @ 6000A
666 mV @ 6000A
Max Output 1.66VAC
Power Requirement 5-24 VDC, 30 mA Maximum
Wire Color Red = Power (+)
Black = Power (-)
White = Signal (+)
Green = Signal (-)
Phasing Arrow Points Towards Load
Phase Shift < 1° at rated current
Frequency Range 45-600 Hz
Linearity ± 0.2%
Conductor Position Sensitivity ± 2% maximum
Influence of External Field ± 1.5% maximum
Temperature Sensitivity 0.07% per °C

Mechanical

Coil Materials Blue thermoplastic rubber, flame retardant UL 94 V-0 rated
Coupling Materials Polypropylene UL 94 V?0 rated
Case Material ABS UL 94 V-0 rated
Shielding 85% transducer, 100% output lead
Working Temp -20 °C to +60 °C (-4° to +140 °F)

Safety

Working Voltage 600 Vrms maximum
Dielectric Strength 7400 VAC around coil
600 VAC rated leads
Certifications Conforms to UL STD61010?1
Certi?ed to CAN/CSA STDC22.2
No. 61010
Click here for complete specifications on the Dent CT-RMV-36-3000-U

What's included with the Dent CT-RMV-36-3000-U

  • Dent CT-RMV-36-3000-U Current Transformer
  • Extending the Leads on Your DENT Current Transformer

    One of the most frequently asked questions in our tech support department is this: "Can I get CTs with longer leads or extend the leads myself? What's the maximum length for CT leads?".

    Standard lead length for a DENT current transformer is 3 meters (with a 7 meter option available for some models). Occasionally, because of electrical room layout or other factors, there is a requirement for longer leads on a current transformer. Therefore, extending the CT leads is necessary. The following is a brief overview of options for extending CT leads based on CT type. Note that the length recommendations listed below apply to PowerScout Series and ELITEpro XC instruments ONLY. To extend RoCoil leads for use with the TCA-5, please contact our experts to get advice specific to your application.

    Split-Core/Hinged Split-Core Current Transformers (Including Revenue Grade Hinged Split Cores)

    DENT Split-Core/Hinged Split-Core Current Transformers - ITM Instruments
    MAXIMUM LENGTH

    Split-Core Current Transformers leads can be extended up to 500 feet using extensions of the same wire type/AWG.

    WIRE TYPE

    600 V Rated VW-1, 105°C, 20 AWG, black and white twisted pair, cURus

    RECOMMENDED SPLICING METHOD/MATERIALS

    Sure-Connect sealed butt splices which require a crimping tool and hot air gun. Always follow manufacturer's instructions.


    RoCoil Current Transformers

    DENT RoCoil Current Transformers - ITM Instruments
    MAXIMUM LENGTH

    RoCoil CT leads can be extended up to 100 feet using extensions of the same wire type/AWG.

    WIRE TYPE

    "Bare" RoCoil: Shielded cable with thermoplastic insulation, 1000 V AC VW-1, 2 x 26 AWG, 80°C, cURus

    RECOMMENDED SPLICING METHOD/MATERIALS ("BARE ROCOIL ONLY)

    Sure-Connect sealed butt splices which require a crimping tool and hot air gun. Always follow manufacturer's instructions.


    Solid Core (Toroid) Current Transformers

    DENT Solid Core (Toroid) Current Transformers - ITM Instruments
    MAXIMUM LENGTH

    Solid Core (Toroid) CT leads can be extended up to 500 feet using extensions of the same wire type/AWG.

    WIRE TYPE

    UL1015 24 AWG 7 Strand Black & White Twisted Pair (1 twist per inch), 600 V rated

    RECOMMENDED SPLICING METHOD/MATERIALS

    Sure-Connect sealed butt splices which require a crimping tool and hot air gun. Always follow manufacturer's instructions.

    Optimizing Performance from Rogowski Coil Current Transformers

    DENT Rogoski Coil - ITM Instruments
    WHAT IS A ROGOWSKI COIL?

    Rogowski coil, named after Walter Rogowski, is an electrical device for measuring alternating current (AC) or high-speed current pulses. It consists of a helical coil of wire with the lead from one end returning through the center of the coil to the other end so that both terminals are at the same end of the coil. The whole assembly is then wrapped around the straight conductor whose current is to be measured.

    Since the voltage that is induced in the coil is proportional to the rate of change of current in the straight conductor the output of the Rogowski coil is usually connected to an electrical (or electronic) integrator circuit in order to provide an output signal that is proportional to the current.

    The relationship between voltage and rate of change of current is explained in the following equation where "V" is voltage and "M" is a constant:

    DENT Rogoski Coil - ITM Instruments
    WHY CHOOSE A ROGOWSKI COIL CURRENT TRANSFORMER?
    Flexible Rogowski Coils, such as the DENT RoCoil, are designed for easy placement around cable bundles, large buss bars, or within tight breaker panels. Their design has several advantages over traditional split core current transformers including:

    1. Open-ended, flexible design allows it to be wrapped around a live conductor without disturbing it.
    2. Rogowski coils feature an air core rather than an iron core, which results in low inductance and faster response time to changing currents.
    3. Highly linear, even when subjected to large currents such as those used in electric power transmission, welding, or pulsed power applications.
    4. Largely immune to electromagnetic interference.
    HOW TO MAXIMIZE PERFORMANCE FROM A ROGOWSKI COIL CURRENT TRANSFORMER

    Rogowski coil accuracy is usually calibrated with the conductor centered in the CT window. In practice, however, the CT typically hangs on the conductor which can introduce measurement errors. Note that the error is greatest when the CT connector hangs on the conductor. The following diagram outlines the error introduced simply by moving the conductor to different positions within the opening of the Rogowski coil.

    DENT Rogoski Coil - ITM Instruments

    Best practice for Rogowski coil installation is to center the conductor as best as conditions allow. In addition, it's a good idea to keep any other conductors (those you do not wish to measure) at a minimum distance of 2x the diameter of the Rogowski coil CT.

    Also, keep in mind that although a Rogowski coil is ideal for large amperage loads, accuracy of the coil may be reduced on smaller loads (<20 A).

    Customer Reviews for the Dent CT-RMV-36-3000-U

    Ask a question about Dent CT-RMV-36-3000-U Current Transformer

    DENT Instruments CT-RMV-36-3000-U Offers

    Like its name implies, the RoCoil mV produces a millivolt output for use with power meters without a built-in amplifier/integrator circuitry. These CTs are available in standard lengths up to 72" and current ranges up to 6000A AC. The RoCoil mV requires 5-24V DC for operation, which can be supplied from a 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 manufacturer's meters

    DENT Instruments CT-RMV-36-3000-U Specifications

    The Dimensions for RoCoil mV CTs
    Dimensions RMV-16 RMV-24 RMV-36 RMV-72
    A - Window Size 13 cm(5") 19 cm(7") 26 cm(10") 56 cm(22")
    B - Transformer Coil O.D. 15 cm(6") 21 cm(8") 29 cm(11") 58 cm(23")
    C - Transformer Length 40 cm(16") 60 cm(24") 90 cm(36") 180 cm(72")
    D - Locking ConnectorO.D. 3.6 cm(1.4")
    E - Transformer Coil Diameter 1.5 cm(0.6")
    F - Wire Lead Total Length 2m(80")
    G - Length of mV Module 9.5 cm (3.8")
    H - Width of mV Module 3.2 cm (1.3")

    Key Specifications

    Four Lengths 40 cm (16"), 60 cm (24"), 90 cm (36"), 180 cm (72")
    4 Window Sizes 13 cm (5"), 19 cm (7"), 26 cm (10"), 52 cm (20")
    4 Current Ranges* 16", 1000A, 10-1300A AC
    24", 2000A, 30-2600A AC
    36", 3000A, 30-3900A AC
    72", 6000A, 60-6000A AC
    Output Signal 333 mV AC at rated current
    Max output 1,665 mVAC
    Accuracy < 1% typical at 2% to 500% of rated current

    *Depending on meter compatibility. See ELITEpro™ and PowerScout™ specifications for details.

    Electrical

    All accuracies specified at 20°C (±2°C)with RoCoil mV™ centered on conductor.

    Output Signal (16") 333 mV @ 1000A
    (24") 333 mV @ 2000A
    (36") 333 mV @ 3000A
    (72") 333 mV @ 6000A
    1665 mV @ 5000A
    999 mV @ 6000A
    666 mV @ 6000A
    Max Output 1.66VAC
    Power Requirement 5-24 VDC, 30 mA Maximum
    Wire Color Red = Power (+)
    Black = Power (-)
    White = Signal (+)
    Green = Signal (-)
    Phasing Arrow Points Towards Load
    Phase Shift < 1° at rated current
    Frequency Range 45-600 Hz
    Linearity ± 0.2%
    Conductor Position Sensitivity ± 2% maximum
    Influence of External Field ± 1.5% maximum
    Temperature Sensitivity 0.07% per °C

    Mechanical

    Coil Materials Blue thermoplastic rubber, flame retardant UL 94 V-0 rated
    Coupling Materials Polypropylene UL 94 V?0 rated
    Case Material ABS UL 94 V-0 rated
    Shielding 85% transducer, 100% output lead
    Working Temp -20 °C to +60 °C (-4° to +140 °F)

    Safety

    Working Voltage 600 Vrms maximum
    Dielectric Strength 7400 VAC around coil
    600 VAC rated leads
    Certifications Conforms to UL STD61010?1
    Certi?ed to CAN/CSA STDC22.2
    No. 61010
    Click here for complete specifications on the Dent CT-RMV-36-3000-U

    What's included with the Dent CT-RMV-36-3000-U

  • Dent CT-RMV-36-3000-U Current Transformer
  • Extending the Leads on Your DENT Current Transformer

    One of the most frequently asked questions in our tech support department is this: "Can I get CTs with longer leads or extend the leads myself? What's the maximum length for CT leads?".

    Standard lead length for a DENT current transformer is 3 meters (with a 7 meter option available for some models). Occasionally, because of electrical room layout or other factors, there is a requirement for longer leads on a current transformer. Therefore, extending the CT leads is necessary. The following is a brief overview of options for extending CT leads based on CT type. Note that the length recommendations listed below apply to PowerScout Series and ELITEpro XC instruments ONLY. To extend RoCoil leads for use with the TCA-5, please contact our experts to get advice specific to your application.

    Split-Core/Hinged Split-Core Current Transformers (Including Revenue Grade Hinged Split Cores)

    DENT Split-Core/Hinged Split-Core Current Transformers - ITM Instruments
    MAXIMUM LENGTH

    Split-Core Current Transformers leads can be extended up to 500 feet using extensions of the same wire type/AWG.

    WIRE TYPE

    600 V Rated VW-1, 105°C, 20 AWG, black and white twisted pair, cURus

    RECOMMENDED SPLICING METHOD/MATERIALS

    Sure-Connect sealed butt splices which require a crimping tool and hot air gun. Always follow manufacturer's instructions.


    RoCoil Current Transformers

    DENT RoCoil Current Transformers - ITM Instruments
    MAXIMUM LENGTH

    RoCoil CT leads can be extended up to 100 feet using extensions of the same wire type/AWG.

    WIRE TYPE

    "Bare" RoCoil: Shielded cable with thermoplastic insulation, 1000 V AC VW-1, 2 x 26 AWG, 80°C, cURus

    RECOMMENDED SPLICING METHOD/MATERIALS ("BARE ROCOIL ONLY)

    Sure-Connect sealed butt splices which require a crimping tool and hot air gun. Always follow manufacturer's instructions.


    Solid Core (Toroid) Current Transformers

    DENT Solid Core (Toroid) Current Transformers - ITM Instruments
    MAXIMUM LENGTH

    Solid Core (Toroid) CT leads can be extended up to 500 feet using extensions of the same wire type/AWG.

    WIRE TYPE

    UL1015 24 AWG 7 Strand Black & White Twisted Pair (1 twist per inch), 600 V rated

    RECOMMENDED SPLICING METHOD/MATERIALS

    Sure-Connect sealed butt splices which require a crimping tool and hot air gun. Always follow manufacturer's instructions.

    Optimizing Performance from Rogowski Coil Current Transformers

    DENT Rogoski Coil - ITM Instruments
    WHAT IS A ROGOWSKI COIL?

    Rogowski coil, named after Walter Rogowski, is an electrical device for measuring alternating current (AC) or high-speed current pulses. It consists of a helical coil of wire with the lead from one end returning through the center of the coil to the other end so that both terminals are at the same end of the coil. The whole assembly is then wrapped around the straight conductor whose current is to be measured.

    Since the voltage that is induced in the coil is proportional to the rate of change of current in the straight conductor the output of the Rogowski coil is usually connected to an electrical (or electronic) integrator circuit in order to provide an output signal that is proportional to the current.

    The relationship between voltage and rate of change of current is explained in the following equation where "V" is voltage and "M" is a constant:

    DENT Rogoski Coil - ITM Instruments
    WHY CHOOSE A ROGOWSKI COIL CURRENT TRANSFORMER?
    Flexible Rogowski Coils, such as the DENT RoCoil, are designed for easy placement around cable bundles, large buss bars, or within tight breaker panels. Their design has several advantages over traditional split core current transformers including:

    1. Open-ended, flexible design allows it to be wrapped around a live conductor without disturbing it.
    2. Rogowski coils feature an air core rather than an iron core, which results in low inductance and faster response time to changing currents.
    3. Highly linear, even when subjected to large currents such as those used in electric power transmission, welding, or pulsed power applications.
    4. Largely immune to electromagnetic interference.
    HOW TO MAXIMIZE PERFORMANCE FROM A ROGOWSKI COIL CURRENT TRANSFORMER

    Rogowski coil accuracy is usually calibrated with the conductor centered in the CT window. In practice, however, the CT typically hangs on the conductor which can introduce measurement errors. Note that the error is greatest when the CT connector hangs on the conductor. The following diagram outlines the error introduced simply by moving the conductor to different positions within the opening of the Rogowski coil.

    DENT Rogoski Coil - ITM Instruments

    Best practice for Rogowski coil installation is to center the conductor as best as conditions allow. In addition, it's a good idea to keep any other conductors (those you do not wish to measure) at a minimum distance of 2x the diameter of the Rogowski coil CT.

    Also, keep in mind that although a Rogowski coil is ideal for large amperage loads, accuracy of the coil may be reduced on smaller loads (<20 A).

    Ask a question about Dent CT-RMV-36-3000-U Current Transformer

    Customer Reviews for the Dent CT-RMV-36-3000-U

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