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Rigid Rogowski Coils

Inquiry

Taehwatrans rigid Rogowski coils are an air cored (non-magnetic) toroidal windings positioned round the conductor. An alternating magnetic field generated by the current in the primary conductor induces a voltage in the coil. Thanks to low inductance and its non-magnetic core, Rogowski coils have the output voltage linearity proportional to the frequency increase and the output of the coil does not saturate for a high primary current more than 1kA and, leading to achieve a great accuracy on high current range. Traditional current transformers for high current measurement are bulky and heavy so that they seriously limit the design flexibility of systems. However, Rogowski coils with compact and light weight design, can provide great advantage for system design to be smarter and more compact.

Rigid Rogowski Coils Features Image

Application

- Smart reclosure in distribution grid
- Air circuit breakers(ACB)
- Gas insulation switchgear (GIS)
- Electronic sectionalizer
- Load balancing
- Power monitoring & Energy metering


Features

- Excellent accuracy
- Wider frequency up to 1 MHz
- High current measurement without saturation

Drawing

Electrical Properties-Drawing

Electrical Property & Dimension

Specification

F : 50Hz

Specification Spec
Model
NO
DCR(Ω)
±6%
Rated
Current(A)
Max
Current(KA)
Self
Current(KA)
Mutual
Inductance
Max Stray
Noise Vo
Max Multual
Inductance Erro(%)
Output
Voltage at 100A
Instant
Peak Amp(KA)
TR77V/L 100Ω 1000Ω 10kA 0.7mH 0.69µH 1.3mV 0.60% 21.6mV 64kA
TR71V/L 181Ω 9kA 7.6mH 3.25µH 0.3mV 0.03% 102.2mV 54kA
TR71VA 13.5Ω 13kA 0.4mH 0.80µH 0.3mV 0.12% 25.0mV 81kA
TR10VSH 173Ω 6kA 5.8mH 2.13µH 0.6mV 0.09% 66.9mV 39kA
TR10LSH
TR10LSC
TR9L 200Ω 6kA 20.9mH 4.48µH 4.0mV 0.28% 140.8mV 40kA


Dimension

unit:mm

Electrical Property
Model NO A(min) B(max) C(max) D(max) E(±0.3) F(±0.3) G(±0.5) H(±0.3)
TR77V 6.8 25.0 11.0 23.5 15.1 19.1 3.0 9.1
TR77L 6.9 23.6 11.0 26.8 7.1 71.0 3.0
TR71V 8.9 27.5 17.0 25.3 15.1 19.1 3.0 15.1
TR71L 8.9 24.8 17.0 28.4 7.6 65.0 3.0
TR71VA 8.9 27.7 20.3 25.3 15.1 9.0 3.0 4.0
TR10VSH 12.9 39.3 14.0 38.0 25.2 32.8 3.0 12.1
TR10LSH 12.9 37.5 14.0 41.3 10.3 240.0 5.0
TR10LSC 12.9 37.5 14.0 46.8 14.9 381.0 5.0
TR9L 19.6 48.2 19.2 52.0 13.2 270.0 5.0

Drawing

Electrical Properties-Drawing

Electrical Property & Dimension

Specification

F : 50Hz

Specification Spec
Model
NO
Current
Rating(A)
Primary
Current
Output
V at Primary
Max
Current(kA)
Self
Inductance
Mutual
Inductance
Max Stray
Noise Voltage
Max Mutual
Inductance Error(%)
TR1L 630A 63A 16.97mV 55kA 1.72mH 0.856µ 0.3mV 0.18%
TR2L 1000A 100A 44kA 0.69mH 0.54µ
TR3L 1250A 125A 51kA 0.43mH 0.543µ
TR4L 1600A 160A 60kA 0.26mH 0.34µ
TR5L 2000A 200A 90kA 0.32mH 0.27µ
TR6L 2500A 250A 120kA 0.2mH 0.22µ
TR7L 3200A 320A 120kA 0.13mH 0.17µ
TR8L 4000A 400A 90kA 0.33mH 0.14µ
TRLS 1000A 100A 10.1mV 55kA 0.69mH 0.32µ


Dimension

unit:mm

Electrical Property
Model NO A(min) B(max) B'(max) C(max) D(max) E(max) F(±7) G(±1)
TR1L 53.0 75.0 48.9 12.5 76.5 31.5 300.0 5.0
TR2L
TR3L
TR4L
TR5L 98.0 119.0 54.4 11.0 76.0
TR6L
TR7L
TR8L
TRLS 50.6 64.0 10.9 7.5 24.7 16.2