Three phase local cost control smart meter

1. Product Introduction
The DTZY825 three-phase remote cost control intelligent energy meter adopts large-scale integrated circuits, uses high-precision energy metering dedicated chips, and its carrier module communication capability and reliability have reached a wide range of practical applications. It also applies digital sampling processing technology and SMT technology to design and manufacture instruments with modern advanced level according to the actual electricity consumption of industrial users.
The performance indicators of this meter comply with standards such as GB/T 17215.321-2008 "Special Requirements for AC Measuring Equipment" Part 21 Static Active Energy Meters (Level 1 and Level 2), GB/T 17215.322-2008 "Special Requirements for AC Measuring Equipment" Part 22 Static Active Energy Meters (Level 0.2S and Level 0.5S), and DL/T 614-2007 "Multifunctional Energy Meters". Its communication complies with the requirements of DL/T645-2007 "Multifunctional Energy Meter Communication Protocol" and is compatible with the requirements of DL/T645-1997 "Multifunctional Meter Communication Protocol". It can be customized according to functional requirements to meet various technical requirements of multifunctional energy meters; At the same time, its security complies with the technical requirements of Q/GDW 365-2009 "Technical Specification for Information Exchange Security Certification of Intelligent Energy Meters" for cost controlled energy meters. The communication protocol between the energy meter and ESAM follows the corresponding ISO/IEC 7816-4 specification.

2. Functional features
Embedded high-speed and high-precision AC voltage and current acquisition module, with high sampling accuracy and real-time accurate energy measurement;
Time division measurement of total positive and negative active power, various rate electricity, positive and negative active power demand, combined reactive power, and four quadrant reactive power.
Programmable 4 rates, 14 time periods, 8 daily time period tables, 14 annual time zones, 254 public holidays.
Adopting a wide temperature and large viewing angle LCD display, with automatic parameter rotation and button display functions.
Equipped with RS485 interface, infrared communication interface, and carrier communication interface, PC or handheld computer can communicate with the electricity meter through three communication interfaces simultaneously, truly achieving three party communication without interference.
Embedded with high-performance carrier module, the reliability of its communication capability enables remote control of the main station. The modular design of the carrier communication interface supports multiple carrier schemes;
It has remote cost control function.
Has active and reactive power test pulse output; It has multifunctional output function and abnormal alarm output function.
Real time measurement of effective values such as A, B, and C three-phase voltage, current, power, and current frequency.
It has recording functions such as voltage loss, phase failure, current loss, total voltage loss, voltage reverse phase sequence, undervoltage, overvoltage, overcurrent, current interruption, current imbalance, overload, total power factor exceeding the lower limit, power outage, programming, demand reset, and timing.
It has power outage button wake-up function, power outage infrared wake-up function, and can also power outage wake-up infrared meter reading.
It has the functions of fault information prompt and alarm (LCD, alarm light).
It has functions of timed freezing, instant freezing, agreed freezing, and daily freezing.
Optional load curve data recording function, with a storage capacity of up to 2M.
It has the function of opening the meter cover and recording the end button cover.
Embedded with highly confidential ESAM module to achieve secure authentication process between the electricity meter and the system master station, ensuring the security and integrity of data exchange with the system master station.
Excellent electromagnetic compatibility performance, able to resist interference from high voltage spikes, strong magnetic fields, strong static electricity, lightning surges, and has strong temperature adaptability.
When powered by a three-phase power supply, the energy meter can still function normally even if any phase in the three-phase three wire system or any two phases in the three-phase four wire system are disconnected.

3. Technical indicators
Rated voltage: 3 × 100V 3 × 57.7/100V 3 × 220/3800V
Basic current: 0.3 (1.2) -20 (80) A
Accuracy level: active power 0.5S level 0.5 level 1 level reactive power 2 level
Rated frequency: 50Hz