1-phase electricity meter | DDS 28 U 220V 5-60A | PLC modem

DDS28U 220 V, 5–60 A single-phase electronic electricity meter

⚡ The DDS28U is an electronic meter designed to measure active electrical energy in a 220 V single-phase network.

It supports direct connection up to 60 A, displays consumption on an LCD and retains accumulated readings when the power supply is interrupted.

🏠 Applications

• apartments;
• private houses;
• cottages;
• holiday homes;
• small shops and offices;
• rental properties;
• garages and workshops;
• internal electricity sub-metering.

🔌 Electrical ratings

• phase — single phase;
• rated voltage — 220 V;
• frequency — 50 Hz;
• maximum current — 60 A;
• connection — direct.

Direct connection means the load current passes through the meter and no external current transformer is required.

📊 Current marking

The nameplate may state 5(60) A or 10(60) A. The figure in brackets is the maximum permitted current.

Confirm the exact current marking from the stocked meter.

📡 PLC communication

PLC — Power Line Communication — transmits metering data through the existing mains wiring.

A compatible PLC meter may communicate with:

• a PLC data concentrator;
• a data-acquisition unit;
• an automated metering platform;
• compatible utility software.

PLC does not require a SIM card or a separate communication cable.

⚠️ Listing inconsistency

The Schetchik.uz title mentions a PLC modem, but the product description states that this version:

• is intended for internal metering;
• is not an online meter;
• does not connect to the local AMR system.

This may mean that the PLC hardware is absent, inactive or incompatible with the local infrastructure.

Do not promise AMR connectivity until the actual meter passport, nameplate and communication module have been verified.

🌐 Requirements for PLC reading

1. a meter with an active compatible PLC module;
2. a PLC concentrator on the same electrical network;
3. a matching communication protocol;
4. a server communication channel;
5. compatible AMR software;
6. registration and configuration of the meter.

🎯 Accuracy class

The typical DDS28U platform uses active-energy accuracy class 1. Confirm the actual class on the meter nameplate and passport.

💾 Memory and archive

Accumulated energy readings are stored in non-volatile memory and are retained during power outages.

Schetchik.uz lists an archive storage period of up to 10 years, although the actual archive depth depends on the firmware.

🕒 Multi-tariff operation

Some DDS28U versions support multiple tariffs and time zones. The function must be programmed and accepted by the electricity provider before official billing use.

🌡️ Operating conditions

• operating temperature — −25 to +55 °C;
• ingress protection — IP54;
• installation — indoors or inside a protected electrical enclosure.

IP54 does not provide protection against immersion or unrestricted outdoor rain exposure.

📐 Dimensions

• body dimensions — approximately 165 × 112 × 71 mm;
• net weight — approximately 0.88–0.9 kg;
• installation — on a vertical mounting surface.

📦 Package contents

• DDS28U electronic electricity meter;
• terminal cover;
• product passport or manual;
• certificate;
• factory packaging;
• PLC module only when installed in the supplied version.

✅ Key advantages

• single-phase 220 V energy metering;
• direct connection up to 60 A;
• LCD display;
• non-volatile memory;
• no SIM card required for PLC;
• suitable for internal sub-metering;
• −25 to +55 °C operating temperature;
• IP54 protection;
• service life up to 10 years;
• 36-month Schetchik.uz warranty.

⚠️ Confirm before ordering

• whether the nameplate states 5(60) A or 10(60) A;
• whether the PLC module is physically installed;
• PLC protocol and carrier parameters;
• compatibility with the existing concentrator;
• connection to the local AMR system;
• integrated relay availability;
• multi-tariff functionality;
• accuracy class;
• meter constant in imp/kWh;
• manufacturing and verification dates;
• certificate validity;
• official acceptance by the electricity provider.

⚠️ Important: until PLC and AMR compatibility are confirmed, the product should be marketed as an electronic meter for internal electricity sub-metering.