Detailed Product Description

DDS70-T is a single phase multi-tariff kWh meter  for residential customers, for revenue measuring of active power in single-phase 2-wire networks. This meter is well equipped with modern technology including communications capability that meets with international standards and can be supplied with either class1 or 2 accuracy according to IEC 62053-21.

Legible LCD Display

The meter is equipped with a large LCD of viewable size .
- Automatic scroll mode
- Manual scroll programmable data set and sequence
- Display available without main power (Option)
- LCD back-light (Option)

Measuring and registration

Meter records import and export energy flow in separate registers, and add the values in both directions as the labeled energy consumption

Real Time Clock

The time clock used by the meter is run from a quartz crystal clocking unit with an accuracy of+/- 5ppm at 25°C. This provides exceptional short term management of time.

Flexible Tariff Management

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

A tariff program are managed by the RTC which 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.

DDS70-T has 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, these combination is called Tariff Set. The meters TOU program can buildup 5 tariff sets at most, that is 0 (off-work set), 1st, 2nd, 3rd, 4th tariff set.

Scroll key

- Scrolling data on LCD
- Hardware key for programing (Separately sealable )

Communications

Meter is quipped with an IEC  optical port. An additional RS485 port is available as  an option. Both ports allow access to measured value, security and status data within the meter. A user friendly Windows-based software is provided together for  programs or reads all metering data and configuration data.

Anti-tampering feature

-Measures the absolute sum of total and export energy

-Indication of reverse energy flow

-Independent seal of the meter body and terminal cover.