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Flexible rogowski coil – NRC series – 1000A to 6000A
40.00 $ – 80.00 $
NRC is a flexible current transducer based on the Rogowski principle, particularly suitable for measurement in combination with portable devices.
NRC coils are available in different size options. Select your required size in the dropdown box below.
| Model | NRC-100, NRC-150, NRC-300 |
|---|
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Advantages of Rogowski coils:
- Easy to install in limited spaces, as is it soft and flexible
- Can be installed without having to switch off power or disconnect power supply
- Easy to install around large bus bars
- Excellent linearity
- Wide dynamic range
- Not damaged by large overloads
- Excellent degree of rejection to the external current conductor
- No danger from open-circuited secondary
- Zero power consumption
- Small position error
- Long-term stability
- Wide dynamic range
- IP67 protection level
Applications of Rogowski coils:
- Smart meters
- Rectifier current measurement
- Power quality analysis
- Motor overload/short circuit protection
- Current monitoring of power frequency and intermediate frequency welding machine
- Medium and high voltage switchgear protection system
- Remote Terminal Units (RTU)
Specifications
| Model | NRC-100 | NRC-150 | NRC-300 |
|---|---|---|---|
| Coil length | 395mm | 525mm | 942mm |
| Window size | 100mm | 150mm | 300mm |
| Reference Rated current | 1000A | 3000A | 6000A |
Product Downloads
What is a Rogowski coil?
Rogowski coils have been used for the detection and measurement of electric currents. They are based on a simple principle: an “air-cored” coil is placed around the conductor in a toroidal fashion and the magnetic field produced by the current induces a voltage in the coil. The voltage output is proportional to the rate of change of current. This voltage is integrated, thus producing an output proportional to the current. By using precision winding techniques, especially developed for the purpose, the coils are manufactured so that their output is not influenced by the position of the conductor within the toroid, and to reject interference from external magnetic fields caused, for example, from nearby conductors. Basically, a Rogowski coil current measuring system consists of a combination of a coil and conditioning electronics.
They can be used in similar circumstances to CTs (current transformers) but for many applications they have considerable advantages:
- Wide dynamic range.
- High linearity.
- Very useful with large size or awkward shaped conductors or in places with limited access.
- Thanks to the structure without hard core, the coil can be easily manufactured according to the application or to the available space.
- Unlike traditional current transducers, there is no danger from open-circuited secondaries.
- They cannot be damaged by large overloads.
- They are non-intrusive.
- They draw no power from the main circuit carrying the current to be measured.
- They are also light weight and in some applications are light enough to be suspended on the conductor being measured.
Warranty
These energy loggers has been field tested to be reliable and with a very low failure rate. If in the rare case something does go wrong, we will swop it out if still under guarantee. This energy logger has a two-year swop-out guarantee. As an authorised Meatrol repair centre, we can also repair Meatrol energy loggers and have stock of replacement parts.
AmpX Management
Technical support
If you have any difficulty with the meter setup, installation, data analysis, or anything else, we will gladly support you.
Please contact our technical support department for technical support on WhatsApp at +27 82 940 1858, or by email: info at AmpX.co
Free Demonstration
We can offer you a free demonstration of our energy meters at our premises or within 100 km. If further away, we will need to charge for our travel expenses.
Alternatively we can also do an online video consultation and demonstration.
Click here to request a demonstration if 100 km from our address.
Click here to schedule an online video call and demonstration.
What is a Rogowski coil?
Rogowski coils have been used for the detection and measurement of electric currents. They are based on a simple principle: an “air-cored” coil is placed around the conductor in a toroidal fashion and the magnetic field produced by the current induces a voltage in the coil. The voltage output is proportional to the rate of change of current. This voltage is integrated, thus producing an output proportional to the current. By using precision winding techniques, especially developed for the purpose, the coils are manufactured so that their output is not influenced by the position of the conductor within the toroid, and to reject interference from external magnetic fields caused, for example, from nearby conductors. Basically, a Rogowski coil current measuring system consists of a combination of a coil and conditioning electronics.
They can be used in similar circumstances to CTs (current transformers) but for many applications they have considerable advantages:
- Wide dynamic range.
- High linearity.
- Very useful with large size or awkward shaped conductors or in places with limited access.
- Thanks to the structure without hard core, the coil can be easily manufactured according to the application or to the available space.
- Unlike traditional current transducers, there is no danger from open-circuited secondaries.
- They cannot be damaged by large overloads.
- They are non-intrusive.
- They draw no power from the main circuit carrying the current to be measured.
- They are also light weight and in some applications are light enough to be suspended on the conductor being measured.
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