WS310, a multi-functional poly phase static electricity meter. It is developed under the ongoing technology evolution in the residential and light commercial sector and in order to meet the growing customer demand for static meters and AMI ready meters.
It gives advantages to all users in the process: an installer, a maintenance engineer, a service engineer, a readout operator and a final user. The meter is approved and manufactured in compliance with the IEC 62052-11, IEC 62053-21 (IEC 61036) standards, and was designed according to even higher internal PAX standards.

Reliability and stability
With proven electronic technology, long-life components and special care in the manufacturing process, WS310 guarantees precise accuracy and high reliability throughout its life span.  Re-calibration is no longer necessary.
 
Fast and Easy Installation procedure
This design is easy to handle and extremely efficient for large-scale residential installations. Adapted to current connection standards the meter is compatible with existing installations and test benches.

Local metering data display (LCD):
Automatic Scroll mode
Manual scroll (by button)
Test mode (for utilities)
Programmable data set and sequence
LCD back-light: optional
LCD display when power absent: optional

Flexible Tariff Management
Benefit from an internal RTC, full Time of Use (TOU) function is realized.

A tariff program is managed by the RTC which is suitable for the most complex metering applications.

The meter is able to generate “End of Period” information as defined by the user, usually based around billing dates.

The non-volatile memory is able to save energy information for up to 12 billing periods. This removes the need to visit the meter on a frequent basis.

WS310 supports 4 kinds of tariffs and 12 intervals in 24 hours for each day, which can be programmed flexibly. Interval 1 to 12 of each day can be combined with tariff 1 to 4 according to various requirements, this combination is called Tariff Set.

In addition, the meter supports  holidays & weekends, which can be individually set with different kinds of combination of tariffs and intervals.

Maximum Demand (optional)
Maximum Demand information can also be measured for all tariff rates allowing optimum billing of high consumption customers in particular.

Communications

Equipped with an optical port in accordance with the protocol defined by IEC 62056-21, the meter can be programmed in the workshop or in the field under security control. 

The port is also enabled for meter reading in accordance with the same standard. The port is secured under password and encryption control, to prevent unauthorized access.

Protected by different security level, the various configuration can be made, such as:
Adjustment of real time clock
Tariff programming
Resetting of Maximum Demand and historic registers.
Meter rate registers reset to zero

The programming tool can be configured on a User by User basis to allow or deny an operator access to any or all of the functions described above.

Besides, the meter can be configured to one way communication to download meter reading data without any security protection.

The operator ID, time and date stamp of last configuration will be recorded as event in meter memory.

Events log & Alarm
-Reverse energy flow
-Demand overload
-Open of terminal cover

Anti-Tamper Features

-Measures the absolute sum of
  total and export energy
-Optional abnormalities alarms &logs
-Independent sealing of the meter
  body and terminal cover
-Not programmable via keyboard

Freezing Function

The meter has optional function to freeze appointed variable parameters at the appointed time. Operators can read out these parameters to analyze.

Self-diagnostic

Meter parameters  need to be set for the first time usage when out of factory. Instead,  LCD will have an indication if the parameters are not integrated
Meter will check the hardware operating well every time when power on again, and will alarm for accidental faults.