ESCT-RC75-1000A, Rogowski Coil, 75mm Diameter, 85mV/kA 1000 Amp Recommended, 3 Meter Cable length
Flexible clip-around Rogowski coil for the electronic measurement of AC current with galvanic separation between the primary circuit (power) and the secondary circuit (measurement).
- Rated insulation voltage 1000 V Cat III PD2
- Accuracy Class 0.5 (IEC 61869-2)
- Protection degree IP67
- 3 m output cable (other lengths available see page 8)
- Ambient temperature 40 °C … +80 °C
- Very flexible and thin coil: 6.1 mm
- Slot for attaching the loop on the primary with a cable tie
- An innovative patented clasp drastically reduces the positioning error near the closing
- Internal shield for enhanced measurement accuracy at low primary currents.
Advantages
- Thin, flexible, and light weight solution
- Very low positioning error
- Quick, non-intrusive and easy setup
- A single sensor for a large current range without overload
- Less influenced by external fields
- Adaptable for a large range of cable diameters
Applications
- MV/LV substations on LV side: Transformer Condition Monitoring
- Power metering: current measurement for active power calculation
- Building sub-metering: energy efficiency monitoring, consumption analysis and cost allocation
- Power quality monitoring: electrical loads and distribution system equipment
- Fault Detection, Isolation and Repair (FDIR): isolate the site of the fault
- Remote Terminal Units (RTU)
- Phasor Measurement Units (PMU)
Standards
- IEC 61010-1: 2010; IEC 61010-2-32 ed.3: 2012
- 1) IEC 61869-1 ed1.0: 2007; IEC 61869-2: ed1.0: 2012
- 1) IEC 61869-6: draft 2016; IEC 61869-10: draft 2016
- UL
Specification
| LEM Part Number | ESCT-RC75-1000A |
| Function | AC Current Measurement |
| Measuring Range | 0 - 5,000 Amp RMS ( for wider range) |
| Secondary Voltage (Sensitivity) | 85mV |
| Frequency Measuring Range | 50-300kHz |
| Operating Voltage | Self Powered |
| Accuracy | 0.5% from 25 to 5000 Amp |
| Phase Angle | < 0.004 |
| Coil Diameter (?) | 7cm |
| Coil Circumference | 22cm |
| Integrator to Coil Cable | 3M Twisted Pair |
| Maximum Voltage | 1000V Reinforced insulation according to EN 61010-1 |
| Operating Temperature | -15°C to 65°C |
| Storage Temperature | -45°C to 80°C |
| Isolation (50Hz, 1 min) | 7.4kV |
| Overload | 300,000 Amp |
| Termination Style | 2 Stripped Wires |
| Weight | 130g |
| Factory Pack Qty | 1 |
| Certifications | UL, ROHS |
Datasheet
Application Notes
1) The Rogowski coil can measure any primary current as there is no saturation effect.
2) Not tested given that in the worst case (load = 0 Ohm i.e. short circuit on the output) the peak dissipated power remains low (< 2 Watts)
3) Frequency bandwidth and phase shift modeling schematic can be provided on request.
4) Referring to the main phase offset of 90 ° (a Rogowski coil is a derivative current transducer)
5) Considering a primary conductor of at least ? 15 mm, perpendicular and in contact with the Rogowski coil.
6) Considering an external conductor of at least ? 15 mm the same current level than internal conductor, perpendicular and in contact with the Rogowski coil.
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