Home/ABB/ABB RET620E-1G NBTNAANNNBA1BNN11G Transformer protection device
ABB RET620E-1G NBTNAANNNBA1BNN11G Transformer protection device
ABB RET620E - 1G NBTNAANNNBA1BNN11G belongs to the Relion® 620 product series and is an intelligent electronic device (IED) for transformer protection and control in power systems. The device is designed for the protection of power transformers and step - up transformers in utility and industrial power distribution systems. It can be applied to single - busbar or double - busbar systems, and is suitable for one or two circuit breakers and a variety of switching devices. It supports multiple communication protocols, enabling data interaction with other intelligent devices and systems. It has integrated protection, control, measurement, and monitoring functions, and adopts a compact and withdrawable plug - in unit design for easy installation and maintenance.
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Phone: 15359273787
Email: sales@zzhuie.com
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ABB RET620E-1G NBTNAANNNBA1BNN11G Transformer protection device
Specific Parameters
- Rated voltage: 100 – 240V AC/DC
- Rated current: 1A or 5A (optional)
- Frequency: 50/60Hz
- Analog inputs:
- Phase current input: Programmable as 5A or 1A CT secondary rated value
- Ground CT option: Programmable as 5/1A nominal rated value
- SEF/HIZ CT option: Has a fixed 0.2A nominal rated value
- Three – phase and ground VT inputs: Rated secondary voltage can be programmed by the user
- Digital inputs/outputs: The quantity and type vary according to the configuration
- Communication interfaces: Supports communication protocols such as IEC 61850, IEC 60870 – 5 – 103, Modbus, DNP3, etc., and has an Ethernet interface and an RS485 interface
- Operating temperature range: -25℃ to + 70℃
- Storage temperature range: -40℃ to + 85℃
- Relative humidity: 5% – 95% (non – condensing)
- Dimensions: Width 177mm, height 177mm (4U), depth 201mm (153 + 48mm)
- Weight: Approximately 4kg
Product Performance
- Comprehensive protection functions: Provides a variety of protection functions, such as differential protection, overcurrent protection (including non – directional phase – to – phase and earth – fault overcurrent, phase – to – phase stepped distance, etc.), thermal overload protection, phase – to – phase imbalance and discontinuity protection, sensitive earth – fault (SEF) protection, high – impedance fault detection (HIZ), directional phase – to – phase, earth – fault and neutral – point overcurrent protection, and phase – to – phase, earth – fault (residual), positive – sequence and negative – sequence undervoltage and overvoltage protection, etc. It can effectively deal with various faults during transformer operation and ensure the safety of the transformer.
- Accurate measurement and monitoring: Can accurately measure parameters such as current, voltage, power, energy, and power factor of the transformer, and monitor the operating status of the transformer in real – time, providing accurate data support for operation and maintenance personnel to facilitate the timely detection of potential problems.
- Flexible control functions: Supports the control of transformer – related equipment and can be operated through the local human – machine interface or remote communication to meet the control requirements of transformers in different scenarios.
- Reliable communication capabilities: Due to supporting multiple mainstream communication protocols, it can achieve seamless communication with substation automation systems and other intelligent devices, facilitating data upload and remote configuration, which is conducive to building an intelligent power system.
- Good environmental adaptability: The device is designed to adapt to a wide temperature and humidity range and can operate stably under different environmental conditions, reducing the probability of failures caused by environmental factors.
- Convenient maintenance: Adopts a withdrawable plug – in unit design, which allows for quick insertion and removal of relevant components during equipment maintenance, shortening the maintenance time and improving work efficiency.
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