ATO - Split-core current transformers
The ATO current sensors are split-core current transformers characterized by high accuracy and low phase shift.
They are precisely designed for the electronic measurement of AC waveform current, ensuring galvanic separation between the primary circuit (power) and the secondary circuit (measurement). Covering a range from 0 A to 125 A, these current transformers are primarily intended for mounting on the primary circuit.
ATO split-core current transformers are versatile, offering both current and voltage outputs. With compact dimensions, self-powered functionality, and apertures ranging from 10 mm to 16 mm in diameter, they are well-suited for various applications. Additionally, these transformers feature a 1-meter-long cable output.
Utilizing air-core technology, the ATO current transformers are particularly suitable for new Smart-Grid applications, meeting stringent standards such as IEC 61869 for ratio error and phase displacement.
ATO – Features and benefits
Features
- Split-core current transformer
- Application up to 600 V CAT III PD2, basic insulation
- Accuracy class 1 (IEC 61869-2) and class 3 (IEC 61869-2)
- Current or Voltage output
- ⌀ 10 mm to 16 mm sensing aperture
- 1 m output cable
- Very low-cost solution
- Compact
- Self-powered
- Slot for attaching the current transformer on the primary with plastic tie
- DIN rail adapter (optional)
Benefits
- No interruption of electricity during installation on insulated conductors
- Quick, non-intrusive and easy setup
- Provide a calibrate output
Typical applications
The ATO sensor series is well-suited for various applications in the smart grid, such as:
- Hybrid inverter (Home Energy Storage)
- 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
- Distributed measurement systems
- Condition monitoring (e.g. Motor loads such as conveyers, pumps)
LEM ATO – Download & Technical Characteristic
| Product | Order | Document | Primary nominal RMS voltage | Secondary Nominal Signal | Supply Voltage range | Op. Temperature |
|---|---|---|---|---|---|---|
| ATO-5-B420-D10/SP4 - 4m cable output | Datasheet 3D | 5 A | Current | 20 to 28 | -10 to 55 °C | |
| ATO-10-B225-D10/SP3 | Datasheet 3D | 10 A | Voltage | Self-Powered | -10 to 55 °C | |
| ATO-75-B1I-D10 | Datasheet | 75 A | Voltage | Self-Powered | -10 to 55 °C | |
| ATO-75-B333-D10 | Datasheet | 75 A | Current | Self-Powered | -20 to 70 °C | |
| ATO-100-B333-D16 | Datasheet | 100 A | Voltage | Self-Powered | -10 to 55 °C | |
| ATO-125-B1I-D16 | Datasheet 3D | 125 A | Current | Self-Powered | -20 to 70 °C | |
| ATO-125-B225-D16 | Datasheet | 125 A | Voltage | Self-Powered | -10 to 55 °C |
ATO Sensors – ASK FOR SAMPLES / QUOTATIONS
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