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DTSD/DSSD-DSM23 Three-phase GPRS Energy Meter

General Introduction

Distribution Transformer Monitoring Terminal (GPRS Meter) a new generation of brainpower terminal: exclusively designed for field service under distribution transformer; combining modern mobile communication technologies (GPRS, CDMA, CSD, SMS,PSTN); adopting main trend processor and super-large capacity memory chips whose strong operational capability ensure the implementation of complex functions (network communication, load management, data storage, data encryption, compression, erc); adopting Siemens industrial class wireless communication chip to make sure the reliability; modularization design, easy to upgrade and replace; providing the refined management with advanced technology tools.

Functions and Features

1.        Measuring electricity parameters, such as: bi-directional active/reactive energy consumption, current, three phase voltage, power, and power factor.

2.        Data display and storage: current, last 10 days, last 2 months, and total group.

3.        Load curve: Keep the data of last 96 data points (default interval of 15 minutes, settable via main station), mainly containing totalgroup data (active/reactive power/energy curve) and point data (three phase total active/reactive power curve, active/reactive energy value-indicated curve, phase energy value-indicated curve, total and three phase power factor curve, three phase voltage/current curve).

4.        Voltage passing rate statistics: according to the upper and lower limit voltage for equipment daily voltage statistics, max and vain voltage with occurrence time can be recorded (memory size: 10 items).

5.        Channel: GPRS, CDMA.

6.        Data transmission:

a)        Active: report relevant data and abnormal alarm information at regular time.

b)        Passive: take orders of detection (real-time data or historical data) and set up, etc.

7.        Equipment self-inspection, reporting running state and fault information.

8.        Parameters can be settable via local port, infrared and 485 ports.

9.        Adapt itself to hi-low temperature, high humidity and other harsh operating environment.

10.    Remote control functions.

Specifications and Parameters

1.        Voltage measuring scope: (50% Un ~ 120% Un), not less than accuracy class 1 <Error:±(1% Rd +1)V>

2.        Current measuring scope: 0.1A ~ 6A, not less than accuracy class 1 <Error:± (2% Rd +0.01) A>

3.        Supply mode: Three phase power supply. The terminal still works normally even if power cut happens to one phase (3 phase 3 wire) or two phase (3 phase 4 phase)

4.        Standard voltage:±20% X rated voltage (3X100V, 3X57/100V, 3X220W380V)

5.        Power consumption: 1VA/Phase in the waiting state (no communication with the front end processor)

6.        Standby power supply: communicate with the main station at least one time (report the date, time, active/reactive power), keep data and maintain the clock chip (battery life: >=5 years) under the conditions of AC power failure

7.        Local interface: Set up and read data via infrared or RS485

8.        Outside size: 277Lx 171Wx 77H mm.