Watt-hour meter in Model No. DTS1088 D1 is utilized with advanced metering chip, digital sampling technology and SMT technology. It is designed and manufactured according to actual situations of resident usage of electricity. This meter is in the advanced level in the world.
The meter meets the requirements of GB/T 17215-2002 Alternating current static watt-hour meters for active energy (classes 1 and 2) and IEC62056Multi-function watt-hour meter. Its communication protocol is in accordance toIEC62056 Multi-function watt-hour meter communication protocol.

Features:
Energy-metering modes

Mode 1: +A
Mode 2: |+A|+|-A|
Mode 3: |+A|-|-A|

Pulse output in fixed pulse width and test interface
LED pulse outputs pulse in fixed pulse width. The output speed rate is 1000imp/kWh. Test output interface isolated from the inside and in fixed pulse width is provided. Pulse width is 10+/-0.2ms.

Data of the meter can be read through RS485 communication or infrared communication. Data which can be read out covers active energy total energy quantity, delivered active energy, received active energy, pulse constant, metering method and current instantaneous power.

Optional functions
Indication of power outrage
When a power outrage occurs or the meter disconnects with the electric network, current active energy total energy quantity can be displayed normally. Manually reading can be realized.

Communication interface
RS485 communication interface is optional
RS485 interface is an optional function. Communication protocol is IEC62056 Multi-function watt-hour meter communication protocol. Communication baud rate is fixed to 1200bps.

Optional infrared communication interface
Infrared interface is optional. Communication protocol is IEC62056Multi-function watt-hour meter communication protocol. Communication baud rate is fixed to 1200bps. Infrared interface and RS485 interface can not communicate simultaneously

Broad measurement range
Maximum current can reach 30 times of Ib, ex.: 4(120)A. It results in replacement of the meters in narrow measurement range. Overload power using error can be avoided as well. Broad working voltage range makes voltage from 45V to 450V shown normally, while the watt-hour meter will not get damaged. Correct measurement can be ensured inside the voltage range of 60V-280V (0.3UN - 1.3UN).

Straight-looking indication of working status
Indication of working status includes: Contrary phase sequence, phase breaking, direction of total power, coherence of 3-phase energy and high or low of current power.

High reliability
By using ferroelectric memorizer, tariff loss caused by watt-hour meter failure and damage can be voided to the maximum extend.

Outstanding EMC and electic protection capacity
EMC capacity and electric protection capacity all meet the requirements of GB/T 17215-2002 1 Alternating current static watt-hour meters for active energy (classes 1 and 2).
Specification and pulse constants
Model No. Category Reference voltage (Un) Rated current (In) Power test pulse constant
DTS1088 3-phase 4-wire 3x220/208V 3x4(120)A  1000imp/kWh
Rated frequency: 50Hz
Accuracy class: Active energy class 1
Weight: About 1.3Kg
Dimension: 274.5mmx172mmx54.3mm
3.2 Technical parameters
Normal working voltage: 0.8Un-1.15Un
Utmost working voltage: 0.30Un-1.30Un
Power loss of voltage circuit: ¡Ü2W and 5VA
Power loss of current circuit: ¡Ü1VA
Normal working temperature: -20-+50
Utmost working temperature: -30-+60
Storage and transportation temperature: -40-+70
Storage and transportation humidity: ¡Ü85%