three phase electronic multifunction watt hour meter - DTSD 450

three phase electronic multifunction watt hour meter
1.specializing in programmable current digital meter
2.high performance

Application

DTSD450 and DSSD450 series three-phase electronic multi-function watt-hour meter is a new generation product tha t can measure reactive energy and active energy with multi-tariff, it is designed by modularization, its multi functions can be combined freely to meet users requirements. Each performance index of it conforms to standard D L/T 614-1997 Multifunctional Watt-hour Meter and standard DL/T 645-1997 Multi-function Watt-hour Meters Communication Protocol as well as total technical requirements for three-phase electronic multi-function watt-hour meters stipulated
in standard GB/T 17215.321-2008/IEC 61036.

Main Technical data

1. Class index: active energy:
class 0.5s, 1, reactive energy: class 2
2. Clock error: 0.5s/day
3. Reference temperature: 23
4. Data protection: data stored time after power off: 10years
5. Environment conditions:
specified working temperature: -20 ~45°C
Utmost working temperature -25 ~55°C
Relative humidity: 85%( at environment temperature 23 )

Main functions.

1. Measurement function
Can measure active energy and reactive energy respectively,
and have separate active and reactive pulse signal output interfaces.
2. Multi-tariff function
a. Four tariffs, ten time intervals.
b. Calen dar for a century (1996-2095) can switch automatically.
c. Record and store the total active energy and reactive energy
and active energy and reactive energy under kinds of tariffs.
3.Demand statistics
a. Record active max demand and its occurring time
b. Demand statistics adopts slip method.
c. Max demand is stored as per month.
d. Automatically alarm and trip for overload
4.Record voltage loss
a.Record 9 voltage loss and information of power failure,
also, can record their initial and restoring time.
b. Record total active energy and reactive energy of no
voltage -loss phase
5.Programming and meter reading
a. RS485 communication interface
b. The programming and meter reading are performed by
RS485 communication interface, infrared communication
interface and palm computer, also it can perform meter
reading through remote controller and alternation displaying.
6. Meter reading at zero o'clock
a. The setting day for meter reading is 1st~28th of every month,
the meter can calculate and store the data in the last month
at zero o'clock of setting day.
b. Can store and display calculated data for past three
months at the same time.
7. Meter reading at power off
The meter is provided with individual meter reading batteries,
so it can finish meter reading at power off.