Zero Current Switching (ZCS) ensures that a relay contact is closed at the zero crossing and opened at the precise moment when zero current flows through it. This has a number of advantages for smart power devices using relay switching techniques. With less potential harm from inrush currents, there is less wear on the relay itself and greater protection for connected switch mode power supplies (SMPS). There is also significantly reduced electromagnetic interference from repeated switching On/Off. Opening a relay contact when the current is zero is important for inductive loads (motors, transformers) but less so for capacitive loads including switch mode power supplies (SMPS) of the type found in computers, servers and IT network peripherals.
Smart Power Cables with Wi-Fi Connectivity
Smart power cables can be used in branch circuits to monitor power and energy usage and provide remote control of connected devices. As the power cables connect in series with the load, they do not require a separate power socket or outlet.
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Netio Smart PowerCables
Netio Smart PowerCables are an industrial smart power extension cable which can connect to a Local Area Network (LAN) using Wi-Fi. A web interface can be used to display power monitoring and energy values including Volts (V), Amps (A), Energy (kWh), True Power (Watts), Frequency (Hz) and the true Power Factor (pf). The output power can be remotely turned ON/OFF via the web interface.
PowerCable REST 101x models can be used for a range of applications including IT severs, networking devices and industrial applications which may require power cycling and/or power and energy usage measurement. The product can be installed in a wide temperature range and supports firmware upgrades over a web using interface.
Other protocols (SKU specific models) in the Smart PowerCables range include XML, JSON and URL API.
Local LAN or Cloud Based Connections
Using the Wi-Fi feature, PowerCable can be connected to a local LAN and monitored via a web interface. The device can also be connected via an IP connection to the NETIO Cloud for internet based monitoring and control.
Typical Applications
PowerCables are suitable for a wide range of applications where there is a need for energy metering and power management:
- Industrial process control
- IT server power and energy usage monitoring
- Remote IT server and networking device reboots
- Audio visual (AV) equipment including multimedia
- Office and conference room equipment management
- Digital signage power up/down
- Lighting system energy saving
PowerCable Features
| Range | LAN RJ45 Ports | WiFi | IQRF | Outlets | ZCS/ZVS | Metering/Metrics | Web-based Management | RS232 Port | Netio Cloud | Scheduler | WatchDog | M2M APIs |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PowerCable-MODBUS | – | Int | – | 1 x UK BS1363 | ZCS | Yes/6 | Yes | – | Yes | – | – | MODBUS/TCP |
| PowerCable-REST | – | Int | – | 1 x UK BS1363 | ZCS | Yes/6 | Yes | – | Yes | – | – | XML, JSON, URL API |
| PowerCable-IQRF | – | – | Int | 1 x UK BS1363 | ZCS | Yes/6 | – | – | – | – | – | IQRF |
| PowerCable-MQTT | – | Int | – | 1 x UK BS1363 | ZCS | Yes/6 | Yes | – | Yes | – | – | MQTT, MQTT-Flex, HTTP Push (XML, JSON) |
Note: ZCS stands for Zero Current Switching. ZVS stands for Zero Voltage Switching.
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