Supplier Details

Year Established:2013

Business Type:Manufacturer and Trading Company

Management Certifiation:

  • JOY311MC Three Phase Triple Phase Current Transformer Electricity Meter

JOY311MC Three Phase Triple Phase Current Transformer Electricity Meter

JOY311MC is a new developed CT (Current Transformer) operated meter, which can be provided singlely or with the whole solution of meter, CT, and contactors together assembled in a meter box.

Product Details

Quick Details


JOY311MC Three Phase Current Transformer Electricity Meter
JOY311MC is a new developed CT (Current Transformer) operated meter, which can be provided singlely or with the whole solution of meter, CT, and contactors together assembled in a meter box.

It is suitable for residential and commercial applications. Credit and management data is transfered from a point of sales(POS) to the meter via a 20-digit numeric token that is generated using the Standard Transfer Specification(STS) encryption prot℃ol and entered into meter via a keypad.

Suitable for commercial metering
External circuit breaker
External Current Transformer
Complete set of solution of CT meter
STS compliant
Keypad with audible and text feedback
Adjustable audio and visual low credit warning levels
Adjustable power limit
Adjustable emergency credit allowance
Automatic diagnosis of various faults include contactor fault, memory ---device fault, etc.
Improved sealing against ingress of insects
IP54 Rated
Significant Reverse Energy (SRE) detection
Advanced tamper detection
Easy switch between prepayment and post-payment option


Nominal Voltage : 3 x 220/230/240V
Operating Range: 70% to 130% of Un
Frequency Range: 50/60Hz

Base Current (lb): 1.5A
Max Current (lmax): 6A


Class 1 (Class 2 optional)

450V (48hr)

Insulation System Classification: Double insulation
Insulation Level: 4kV rms for 1 minute

Voltage Circuit: ≤ 2W/10VA@Un
Current Circuit: ≤ 4.5VA@Ib

Overload Protection
Tamper Protection: magnetic interference, open cover 
and reverse power
No-load Protection
SRE Measurement

Operating Temperature: -30℃ ~ 60℃
Storage Temperature:-40℃ ~ 70℃
Relative Humidity: ≤ 95%; annual mean 75%
IP Rating: IP54

Wired: Non-polarized 2 wire low voltage
PLC (power line carrier) communication

IEC 62055-31, IEC62055-41
IEC 62052-11, IEC62053-21, IEC62056-21

Electrostatic Discharge: 16kV air discharge; 10kV contact discharge
Immunity to Fast Transient Burst: 4kV
Surge Immunity: 4kV or 6kV alternative

87mm x 34mm
8 digits + icons + 2 digits (index)
Backlight reserved
Battery reserved

Credit balance
Estimated days left
Last recharge credit amount
Total active power

Active: 10000 imp/kWh
Reactive: 10000 imp/kVarh
Communication LED
Credit LED: low credit alarm

Feedback on key press
Token accept or reject
Low credit alarm

12 keys, international outlay standard with
0-9 numeric key, backspace and enter key

Optical port

Internal contactor in each phase

Type: fixed block
Maximum cable size: Ф6 mm

1.8m height installation, indoor or outdoor wall-mounted
CIU optional

15 Years
Data retained over 20 years

Weight: 2.1kg
Dimensions: 287mm x 170mm x 75mm


Weight: 40kg
Dimensions: 1000mm x 650mm x 280mm
Material: Stainless Steel


Company Profile

Joy provides comprehensive solutions to energy metering and control globally. With a pool of talents, it is able to tailor solution as needed; with the factory sized 26500sqm and automated production lines, it is able to produce up to 2 million units annually.
Joy is devoted to helping utilities, corporation and consumers to better control scarce resources like heat, water, electricity and gas. After continuous and intensive development, Joy’s product range has been extended to heat, water, electricity and gas measuring devices, collection and communication devices, as well as energy control and management systems.
As a company with international presence, Joy has built up a number of R&D centers, sales and support centers which are closely located to its end customers. Joy is devoted to providing quicker and better support globally.
Joy team consists of experts from various backgrounds such as metering, communication and software industries. The team is a multi-national team holding strong global perspectives. Highly educated and experienced engineers form approximately 45% of the team. Joy has established cooperative relationship with a number of top universities in China including Tsinghua University, Tianjin University and Zhejiang University. Joy sets out a policy since 2012 – at least 10% of annual sales shall be invested into R&D in order to provide leading technology and products to our customers continuously. Joy owns more than 20 patents. It is one of the first companies that come out STS compliant water and gas meters, highly accurate ultrasonic water meters, heat cost allocators and so on.
Joy has two automated production lines for electronic modules (SMT, reflow soldering, AOI and wave soldering), more than 20 test benches for water meters, more than 10 test benches for heat meters, 5 test benches for gas meters, and more than 40 test benches for electricity meters. It has an environmental lab for temperature, humidity, shock and salty spray tests, an aging lab, a heat and water meter lab, an EMC lab (surge, static, fast transient impulse etc). Besides, a thermal lab is customized and built specially for heat cost allocators. Sufficient test equipment and stringent control procedures are in place to ensure high quality.
Joy has implemented RDM, OA, ERP and PMS systems. It is ISO90001, ISO14001 and MID D-module accredited. Joy is the first China based company that received MID accreditation for ultrasonic heat meter and STS approval for water meter. Up to 2013, Joy has provided products and services for over 60 countries or areas.
In near future, Joy sees itself as a leading provider of solutions to energy metering and control for residents, commercials and industries.


Post Buying Request

  • * Title:Please input title
  • * Message:Please input message
  • Your message must be between 20-8000 characters
  • * Your Email Address:Please input Email
  • Your email is also your login ID