Three Phase Post-Pre Paid Meter WHM300

The WHM300 is the first in a range of highly competitive smart meters, Developed and Patented to meet the changing requirements of worldwide utility markets, the WHM100 meter benefits from modern technology and up to date manufacturing techniques.

                                         IEC 62053-21, 62053-11, SANS 1524

Features include:

• Highly accurate; supports IEC 60687, IEC 61036, IEC 61268, IEC 62053-21, IEC 62053-22, and IEC 62053-23
• Compatible with 3-phase/3-wire, 3-phase/4-wire, and other 3-phase services
• Less than 0.1% active energy error over a dynamic range of 1000 to 1 at 25°C
• Supplies active/reactive/apparent energy, voltage rms, current rms, and sampled waveform data
• Two pulse outputs, one for active power and the other selectable between reactive and apparent power with programmable frequency
• Digital power, phase, and rms offset calibration
• On-chip, user-programmable thresholds for line voltage SAG and overvoltage detections
• An on-chip, digital integrator enables direct interface-to-current sensors with di/dt output
• A PGA in the current channel allows direct interface to shunts and current transformers
• An SPI®-compatible serial interface with IRQ
• Proprietary ADCs and DSP provide high accuracy over large variations in environmental conditions and time
• Reference 2.4 V (drift 30 ppm/°C typical) with external overdrive capability
• 300 Volt Meter

• GSM / SMS (ICASA Approved)
• Internal CT’s
• 512Kb FRAM
• 32MB Flash
• ARM 7 Microprocessor
• SPI compatible Serial interface
• 2 x 16 LCD display
• RS232 Interface
• Real Time Clock
• Battery Backup 3.3v
• Unique ID Number
• No data loss if power fails
• Load control capability
• Post or Pre Paid meter in one
• Quad Band GSM—GPRS
• Anti Tampering Detection
• Bypass Tampering Detection
• Alarm Status on
• Over Voltage
• Under Voltage
• Phase failure
• Phase to Neutral Voltage per phase
• Phase to Neutral Amps per phase
• KVA per phase
• KVA all phases
• KWH all phases

Software features include:

• Electricity usage in kW/h or Currency
• Alarm condition for minimum / maximum (Ampere) usage
• Over and Under voltage alarms
• Set meter to Post or Pre Paid
• Peak usage
• Remote devices—1 to 5 remote relay devices—optional
• VRMS Peak
• IRMS Peak
• Communicate with multiple devices via GPRS concurrently
• 60 days data storage, Data time stamp, TOU, kW/h, Rate, Season
• Firmware upgradeability via JTAG and GPRS
• Parameters programmable via GPRS / SMS

 

Patents : 2005/08879, 2005/08880, 2005/08881, 2005/08882, SABS, IEC, ICASA Approved