Darui Electric recommends
A multifunctional power meter is a smart instrument with programmable measurement, display, digital communication, and energy pulse transmitter output. It can complete power measurement, energy metering, data display, collection, and transmission. It is widely used in substation automation, distribution automation, intelligent buildings, and internal enterprise power measurement, management, and assessment. The measurement accuracy is 0.5 level, with LED on-site display and remote RS-485 digital interface communication, using MODBUS-RTU protocol. Suitable for distribution cabinets and intelligent buildings.
Measurement Functions
It can measure all common electrical parameters in a three-phase power grid system with high precision: three-phase voltage, three-phase current, active power, reactive power, power factor, grid frequency, active energy, reactive energy, and has communication interface and energy pulse output. It uses MODBUS-RTU communication protocol to achieve LED on-site display and remote RS-485 digital communication. It features easy installation, simple wiring, convenient maintenance, low engineering volume, on-site programmable input parameters, and can complete networking communication with different PLCs and industrial computers in the industry.
Features
Measurement: Three-phase voltage, current, active power, reactive power, power factor, frequency, active energy, reactive energy
Metering: Forward and reverse active energy, inductive and capacitive reactive energy
Display: Three rows of LED digital tube display, high visibility
Communication: RS485 communication, MODBUS-RTU protocol
Output: 2 channels of energy pulse output (pulse constant 10000imp/kWh)
Expansion: Can directly connect signals from current and voltage transformers, with on-site programmable input parameter ratio
Optional: Can add analog 4-20mA transmitter output, switch quantity input, switch quantity output, and over-limit alarm function
Application: Suitable for complete monitoring and management of electrical parameters in various incoming line circuits and large-capacity distribution circuits
[2] Installation Method
1). In the fixed distribution cabinet, choose a suitable place to open an installation hole of the specified size.
2). Take out the meter, loosen the positioning screw, and remove the fixing clip.
3). Insert the meter into the meter hole of the distribution cabinet.
4). Insert the fixing clip of the meter and tighten the positioning screw.
Note: L-N is auxiliary power. Please connect correctly according to the wiring diagram on the meter shell!
[3] Auxiliary Power Supply
The multifunctional power meter pz568e has a universal (AC/DC) switching power supply input interface. Unless otherwise specified, it is provided with a 220V (AC/DC) or 110V (AC/DC) power interface as standard. The extreme working power supply voltage of the meter is AC/DC: 80-270V. Please ensure that the provided power supply is suitable for this series of products to prevent damage.
A. When using AC power, it is recommended to install a 1A fuse on the live wire side.
B. For areas with poor power quality, it is recommended to install surge suppressors in the power circuit to prevent lightning strikes, and fast transient pulse suppressors.
Input Signal
The product adopts a calculation method where each measurement channel is collected separately, ensuring complete consistency and symmetry during use. It has multiple wiring methods and is suitable for different load forms.
Description:
A. Voltage input: The input voltage should not be higher than the rated input voltage of the product (100V or 400V), otherwise, consider using a PT. A 1A fuse must be installed at the voltage input terminal.
B. Current input: The standard rated input current is 5A. For currents greater than 5A, an external CT should be used. If other instruments are connected to the CT, the wiring should be in series. Before removing the current input connection of the product, always disconnect the CT primary circuit or short-circuit the secondary circuit. It is recommended to use a terminal block instead of directly connecting to the CT for easy installation and removal.
C. Ensure that the input voltage and current correspond, with consistent phase sequence and direction; otherwise, numerical and symbol errors will occur! (Power and energy)
D. The configuration of the meter input network is determined by the number of CTs in the system. In the case of 2 CTs, choose the three-phase three-wire two-element mode; in the case of 3 CTs, choose the three-phase four-wire three-element mode.
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
