Zhejiang Holley International Co. Ltd

Model Number: HL-DDS28u Brand Name: HOLLEY INTL Key Specifications/Special Features: Used as terminal of AMR systemSuitable for purpose of reducing cost of line lostStandard: IEC 62053-21Alternating current static watt-hour meters for active energy (class 1 and 2)Measures active energy and frozen data

Enable concentrator to read data in auto meter reading day and transfer data through power line

TOU technology and infrared communication are also available

Normal working voltage: 0.8 to 1.1Un

Limit of working voltage: 0.7 to 1.2Un

Normal working temperature range: -25 to 55°C

Limit of working temperature: -40 to 70°C

Humidity: 25 to 85% RH

Power consumption: ≤2W (active) and ≤2.5VA (apparent)

Clock accuracy: daily timing error <0.5s (23±2°C)

Maximum distance of infrared communication: >4m

Functions:

• Capable of active and reactive energy measuring and display summation by LCD
• Multipletariff function 4-tariff available for various time period 1-year can be divided into 4 seasons 1-day can be divided into 10 time zones
• Various time or season can use various tariff
• Energy data frozen automatically

History energy record:

• Event log
• Alarm
• Power-off memory function
• Anti-tamper function
• Remotely control
• Real time maximum power control
• Infrared communication

Administrator can set date and time for automatic meter reading

Meter can freeze total energy and energy of each tariff for maximum 6 days, 11 months, memory exceed, will automatically replace old data

Meter can store energy data of each tariff and no consumption days for 12 months

Data can be collected through infrared or PLC communication