Distribution Transformer Monitoring Terminal

Distribution Transformer Monitoring Terminal (Network 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, etc), adopting Sony Ericsson 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, power factor;
2. Data display and storage: Current, last 10 days, last 2 months, total group;
3. Load curve: Keep the data of last 96 data points (default interval of 15 minutes, settable via main station), mainly containing total group 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 min voltage with occurrence time can be recorded (memory size: 10 items);
5. Channel: GSM, GPRS, CDMA or GSM + touch-tone telephone and broadband network as spare;
6. Data transmission:
Active: Report relevant data and abnormal alarm information at regular time.
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 port;
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 2. Current measuring scope: 0.1A-6A, not less than accuracy class 1 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, 3X220V/380V);
5. Power consumption: 1VA/Phase in the waiting state (no communication with the front end processor);
6. Standby Power Supply: Communicate with the front end processor 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: 277L x 171W x 77H mm.