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Rogowski Coil MFC140-UI
Rogowski Coil MFC140-UI

Rogowski Coil MFC140-UI (7 mm cross-section) is a flexible current transducer based on the Rogowski principle. MFC140-UI coils are available in different sizes and can be supplied according to the customer's design, therefore they can be used in all applications where traditional transducers do not fit due to their size and/or weight.
The MFC140-UI coil is equipped with a shield against the influence of external magnetic fields, therefore it ensures stable measurement from low currents up to hundreds of kA.
The MFC140-UI is also available with a built-in integrator, without the need for external devices for 90° phase shift compensation and frequency equalization. This is an advantage because there are no external boxes, providing ease of use.

TECHNICAL SPECIFICATIONS

Transducer

Coil length: 15 ... 50 cm
Cord diameter: 7.2 ±0.2 mm
Fastening: bayonet holder
Weight: 150 – 500 g
Material: Polyphenylene and thermoplastic elastomer

Electrical characteristics for model without integrator

Rated output level: 120 mV / kA @ 60 Hz (RMS values)
100 mV / kA @ 50 Hz (RMS values)
Max measurable current:
600 A for coil length 15 ... 28 cm
2500 A for coil length 29 ... 28 cm
5000 A for coil length 42 ... 50 cm
Coil resistance: 170 ... 690 Ω
Accuracy: Class 1-A1 according to IEC 61869-10
Frequency: 50/60 Hz
Max primary voltage: 600 V CAT IV, Service Entrance
Pollution degree: 3, Uncontrolled Environment
Insulation test voltage: 7400 VRMS / 5 s

Electrical characteristics for model with integrator

Power supply: 4 ... 26 VDC
Max consumption: 5 mADC
Rated output level: 333 mV / FS (RMS values)
FS depends on model: 200, 250, 600, 1000 A
Positioning error: Better than ±1% of reading
Frequency: 50/60 Hz
Max primary voltage: 600 V CAT IV, Service Entrance
Pollution degree: 3, Uncontrolled Environment
Insulation test voltage: 7400 VRMS / 5 s

Connection cable for model with integrator

Type: 3 x 24 AWG shielded
Length: 3 m. Others on request: 5, 7, 10, 15 m

Connection cable for model without integrator

Type: 5 x 24 AWG shielded
Length: 3 m. Others on request: 5, 7, 10, 15 m

Environmental conditions

Protection degree: IP68
Operating temperature: -35 ... +75°C
-35 ... +60°C up to 2500 A for coil length 15 ... 41 cm
up to 5000 A for coil length 42 ... 50 cm

Standards compliance

IEC, UL standards:
ANSI/CAN/UL 2808, CSA C22.2 NO. 61010-1-12, IEC 61010-2-032, IEC 61010-1 Ed3, IEC 60529

Certification

UL Certified