ČKD ELEKTROTECHNIKA
manufacturer of heavy current electro-technical devices and systems for power industry, infrastructure, gas industry, ecology, metallurgy, underground mining.
| ČKD ELEKTROTECHNIKA
- Profile company
- Static Var Compensators (SVC)
- Regulated drives
- Converter systems
- Traction substations
- VHV sources for electrostatic precipitators
- Excitation systems and co-generation units
- Applications, Heatsinks and accessories
- Voltage quality monitoring system
- Special applications of performance electronics
- Power transformers and reactors
- Service and test lap services
Voltage quality monitoring system
ELNET - Q - industrial product which, based on EN 50160 based measurement and follow-up evaluation of power grid voltage quality, enables giving instruction for implementation of measures protecting systems connected in the grid.
Areas of application:
- enables measurement of harmonics (50Hz grid and other)
- enables power factor measurement
- protection of systems against damage by non standard effects in the grid
- capability of long term monitoring of the power grid
Hardware block diagram
Properties ELNET-Q monitoring system:
- it monitors and evaluates 50 harmonics of three delta/phase voltage in real time
- it monitors and evaluates THD distortion factor (Total Harmonic Distortion) for each voltage
- it measures mean, effective and maximum value of monitored voltage and its frequency
- adjustable limits of individual harmonics, voltage and frequency, which lead to accident when exceeded
- unique possibility of waveform monitoring on PC, remote data transmission and data archiving
- 2x RS232 interface (Modus protocol) for communication with PC. Configurable transmission speed (50Bd-93kBd)
- it evaluates asymmetry of three-phase system
- system properties can be modified in accordance with client’s requirements
Technical data
|
type |
ELNET-Q |
|
dimensions (w x h x d) |
180x180x70 mm |
|
number of connectors |
2 |
|
power supply voltage |
230V |
|
consumption |
maximum 50mA |
|
ambient temperature |
-20°C + 50°C |
|
analogue inputs |
7 input values |
|
logic inputs |
1 voltaic split (doubled, 230V or 24V) |
|
logic outputs |
1 voltaic split, direct input for switching the relay = 20V |
|
communication |
2RS232, 1 configurable speed, MODBUS protocol |