Single Phase Meter

WS74

Advanced Electricity Energy Meter

ws74
ws74
ws74

Product Overview

Product Overview

  • Active and reactive energy calculation

  • Active and reactive demand calculation

  • Consumption and cumulate energy register

  • Cumulate maximum demand calculation

  • Relay control

  • TOU, 8 Tarrif with 10 seasons

  • Load profile

  • Up to 12 months' history energy and demand data

Parameters

Parameters

  • Voltage

  • Current

  • Neutral Current

  • Zero Sequence Current

  • Power Factor

  • Power (Active, Reactive, Apparent)

  • Frequency

  • Phase Angle

Key Features

Key Features

  • 4 Quadrants Measurement

  • Demand Monitoring

  • Back-up Battery

  • Anti-Tamper

  • Real-Time Clock

  • IP54

  • Backlight

  • Ultrasonic Sealing

  • TOU

  • Neutral Current Measurement

  • 12 Billing Period

  • Event & Alarm

  • Load Control

  • Load Profile

  • PQ Monitoring

Technical Data

Accuracy Class

Active Class 1.0 ; Reactive Class 2.0

Connection Type

1P2W

Nominal Voltage

230 V

Nominal Current

10 A

Max. Current

100 A

Starting Current (% Ib)

0.4% Ib

Frequency

50 Hz ±2%

Constant

1000 imp / kWh ; 1000 imp / kVArh

Power Consumption (V,I)

(Less than 2 W, 10 VA), Current (2.5 VA) ; ≤ 0.5 s / d at 23˚C

RTC

Variation of accuracy with temperature is less than 0.15s / ˚C / day

COMMUNICATION

Local Communication

Optical Port, RS232 / RS485

Remote Communication

PLC / RF / GPRS / 2G / 3G / 4G / NB-IoT

ENVIRONMENTAL

Typical Operation

-25°C to +70°C

Storage

-40°C to +80°C

Relative Humidity

≤ 95%

MECHANICAL

IP Degree

IP54

Meter Case

PC+10%GF

Dimension

246.1 mm (L) x 129.5 mm (W) x 68 mm (H)

Weight

Approx. 0.8 KG

PROTOCOL & STANDARDS

IEC62052-11


General req. and test condition of AC measurement device

IEC62053-21

AC static active energy meter (class 1 and 2)

IEC62053-23

AC static reactive energy meter (class 2 and 3)

IEC62056-21

Local data exchange for meter reading, tariff and load control

IEC62056-42

Physical layer for meter reading, tariff and load control

IEC62059-41

Dependability - Part 41: Reliability prediction

IEC62059-32-1

Dependability – Part 32-1: Durability – Testing of stability of

metrological characteristics by applying elevated temperature

IEC62056-47

COSEM transport layers for IP networks

IEC62056-53

COSEM application layer

IEC62056-61

Application layer data exchange chapter 61: OBIS code

IEC62056-46

Data link layer for meter reading, tariff and load control

IEC62056-62

Interface classes for meter reading, tariff and load control

IEC62053-31

Pulse output devices for electromech. and electronic

meters


EVENT LOG

  • Magnetic detection

  • Reverse current detection

  • Over current record

  • Over and under voltage record

  • Meter cover open detection

  • Terminal cover open detection

  • Power outage detection and etc.


LCD DISPLAY (WITH BACKLIGHT)

  • LCD display main value with 7 digits, the visible size is 56.5 mm x 19 mm.

  • Support four (4) display modes with programmable display item:

  • AUTO mode display ( Auto Scroll ) ALT mode display

  • TEST mode display ( with decimal places )

  • POWER OFF mode display


Diagram

Product Compliance

Join us on the journey to Smarter Energy

Whether you're a utility, system integrator, or government agency, We are ready to support your goals across the globe.

Join us on the journey to Smarter Energy

Whether you're a utility, system integrator, or government agency, We are ready to support your goals across the globe.

Join us on the journey to Smarter Energy

Whether you're a utility, system integrator, or government agency, We are ready to support your goals across the globe.