Landis+Gyr ZFQ202, User Manual

Page: 13 / 88

H 71 0200 0215 f en - ZMQ202 / ZFQ202 - User Manual Gyr
Description of Unit 13/88
2 Description of Unit
The ZxQ is a high precision combimeter of class 0.2S designed for grid
metering applications.
2.1 Features
The ZxQ is the answer to customer needs, providing
• More measurement quantities (e.g. single phase, U, I, VA)
• Installation diagnostics for easy commissioning
• Quick network diagnostics on site
• Standard protocols for communication with billing station.
Excellent measurement features for Cl.0.2S
• Gyr-proven long-term stability and reliability
(75,000 Cl.0.2S meters in operation)
• All requirements guaranteed according to IEC 60687 and the new
IEC 62053-22
• Excellence in measurement from starting load to Pmax in both energy
flows
• Negligible influence if power factor is less than 1
• Reactive energy Cl.0.5 possible (IEC definitions only for Cl.2).
Special grid functions
• Measurement system five times faster than for industrial meters, giving
sufficient resolution for integration periods less than 15 minutes (1 to 5
minutes) and accurate measurement by changing energy flow
• Easy customer calibration for all phase corrections
• Transmitting meter with concentrator (extension for existing equipment)
• Additional power supply secures communication even if the measuring
voltage fails. In addition, the additional power supply prevents the line
between transformer and meter from improper voltage drops.
Communication
• Standard dlms communication protocol with the possibility of other
standard protocols for network management
• Use of modular communication units separated from measurement
(same solution as ZMD400).
Transmitting contacts
None, or 4 to 8 transmitting contacts, constant impulse frequency up to 40
imps/s, possibility for two contacts with the same value or quadrant
splitting.