Single-Phase Electronic Energy Meter (4P)
ZSD-11110-R
Single-phase DIN rail energy meter in 1P, 2P and 4P versions with class B/C active energy accuracy, DL/T645 and MODBUS-RTU support and an optional 4G module.

Product Overview
Single-phase DIN rail energy meter in 1P, 2P and 4P versions with class B/C active energy accuracy, DL/T645 and MODBUS-RTU support and an optional 4G module.
Core capabilities
Accurate bidirectional metering: Class B/C active energy accuracy, forward and reverse measurement, flat error curve.. Multiple communication options: Three protocols over RS485, with a 4G module available.. Multi-tariff time-of-use billing: 5 tariffs, 14 time segments and 8 daily tariff tables..
Data Generated
Product Features
Accurate bidirectional metering
Class B/C active energy accuracy, forward and reverse measurement, flat error curve.
Multiple communication options
Three protocols over RS485, with a 4G module available.
Multi-tariff time-of-use billing
5 tariffs, 14 time segments and 8 daily tariff tables.
Industrial reliability
Operating range -25℃~+55℃ and altitude up to 4000m.
Full form factor range
1P, 2P and 4P direct-connection versions on 35mm DIN rail.
Secure data retention
Outage data retained for at least 10 years.
System Topology
Technical Parameters
Technical Data
Rated voltage AC 220V / 230V, 50Hz Accuracy class Active energy class B (±1.0%/±1.5%) / class C (±0.5%/±1.0%) Communication interface RS485, DL/T645-2007 / DL/T645-1997 / MODBUS-RTU Wireless communication 4G module optional Tariffs 5 tariffs / 14 time segments / 8 daily tariff tables Metering direction Forward and reverse active energy
| Rated voltage | AC 220V / 230V, 50Hz |
| Accuracy class | Active energy class B (±1.0%/±1.5%) / class C (±0.5%/±1.0%) |
| Communication interface | RS485, DL/T645-2007 / DL/T645-1997 / MODBUS-RTU |
| Wireless communication | 4G module optional |
| Tariffs | 5 tariffs / 14 time segments / 8 daily tariff tables |
| Metering direction | Forward and reverse active energy |
| Power consumption | Voltage circuit ≤2W/10VA; current circuit ≤1VA |
| Operating temperature | -25℃ ~ +55℃ |
| Altitude | ≤ 4000m |
| Data retention | ≥10 years after power loss (new battery); clock accuracy ≤0.5s |
| Mounting | 35mm standard DIN rail, 1P/2P/4P |
| Protection requirement | Must be installed in an enclosure rated IP51 or higher |
Installation Instructions
Standard 35 mm DIN rail mounting; terminals: supply side L1/L2/L3, N, PE, communication and signal terminals as marked on the device.
Key Points
FAQ
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