Three Phase Four Wire Smart Energy Meter
Type: DTSD1311-CT
MOQ: 100 pieces
This meter can accurately measure combined reactive energy, forward and reverse active energy, four-quadrant reactive energy and other electrical data. It precisely records the maximum demand of forward active power and combined reactive power, and measures real-time grid parameters including active power, reactive power, apparent power, voltage, current, power factor and frequency.
description
| Item | Sub-item | Parameter |
| Basic parameter | Applicable Standards | GB/T 17215.321-2021, GB/T 17215.323-2022 |
| Application Scope | 3-phase 4-wire / 2-phase 3-wire energy metering | |
| Service Life | 10 years | |
| Operating Voltage | Normal: 0.8Un~1.2Un; Limit: 0.7Un~1.3Un | |
| Rated Frequency | 50Hz±2.5Hz | |
| Starting Current | CT-connected: 0.02Itr/0.04Itr (active), 0.003In (reactive); Direct-connected: 0.04Itr (active), 0.003In (reactive) | |
| Anti-creep Design | No more than 1 pulse output under no-load condition | |
| Auxiliary Power | 100V~240V AC/DC adaptive, priority power supply | |
| Environmental & Mechanical | Operating Temperature | Normal: -25℃~60℃; Limit: -40℃~70℃ |
| Relative Humidity | 25%RH~95%RH | |
| Weight & Dimensions | 3kg; 290×170×85mm | |
| Installation Size | 240(256)×150mm | |
| Protection Level | IP54 | |
| Functions | Accuracy Class | Active: Class 0.5S/1.0; Reactive: Class 2.0 |
| Pulse Constant | 400/800/10000imp/kWh, 10000imp/kvarh | |
| Core Metering | Forward/reverse active, 4-quadrant reactive, combined reactive energy metering | |
| Split-phase Metering | Supports per-phase active energy metering | |
| TOU Metering | Peak/flat/valley energy accumulated separately; total energy calculated without period arithmetic addition | |
| Clock & Power System | Timing Accuracy | ≤0.5s/d (23℃); ≤±1s/d (-25℃~+60℃) |
| Battery Specs | ≥1200mAh; ≥10-year service life | |
| Calendar & Time Sync | Auto leap year recognition; broadcast time sync (1/day, ±5min); password-protected manual sync | |
| Billing | Recording Scope | Forward/reverse active, 4-quadrant reactive, per-tariff maximum demand with timestamp |
| Billing Method | Slide-type calculation; configurable period (5/10/15/30/60min, default 15min) & slide interval (1/2/3/5min, default 1min) | |
| Data Storage | 12 months of settlement cycle maximum demand data | |
| Reset Function | Auto-reset on settlement/period change; manual reset supported; all operations fully recorded | |
| Tariff & Schedule Management | Tariff Support | 4 tariffs (peak/flat/valley/critical peak) |
| Schedule Configuration | 14 annual time zones, 8 daily schedule tables, ≥8 time periods/24h, min 15min interval | |
| Special Tariffs | Holiday/public holiday special tariff settings | |
| Scheme Switching | 2 sets of programmable tariff schemes, timed switching supported | |
| Data Storage & Freezing | Meter Reading Data | 12 cycles of total/period energy & maximum demand data; auto-transferred on meter reading day |
| Power-off Data Retention | >10 years | |
| Freezing Functions | Scheduled, instantaneous, daily, scheme switching, hourly freezing | |
| Event Recording & Alarm | Event Categories | Voltage loss, phase failure, current loss, reverse phase sequence, power flow reverse, power off, overload, cover opening, programming, time setting, reset, etc. |
| Recording Capacity | Total occurrences + last 10 event details (timestamp, data, operator code) per category | |
| Alarm Methods | LCD fault display, relay alarm | |
| Real-time Measurement | Per-phase voltage, current, power factor, active/ reactive/ apparent power, frequency, internal temperature, current demand | |
| Load Profile Recording | Configurable start time & sampling interval (min 1min, default 15min); 6 optional recording channels | |
| RS485 | Configurable rate (1200/2400/4800/9600bps, default 2400bps); optional 2nd channel with Modbus support | |
| IR Communication | Modulated IR, 1200bps | |
| Optional Wireless | Hybrid(PLC+RF), 4G, NB-IoT | |
| Output Functions | Pulse output (80ms±20ms width); programmable multi-function output (clock/period end/period switching signal) | |
| Display Type | 8-bit LCD (configurable decimals); 2 red pulse indicators (active/reactive) | |
| Display Modes | Auto cycle, key cycle, self-test display | |
| Power-off Display | Wakeable by key/non-contact method; auto-shutoff after 1 cycle/30s of inactivity | |
| Operation Buttons | Scroll, MD Reset | |
| Security Protection | Identity authentication, ciphertext transmission, MAC verification | |
| Permission Management | 2 security levels (98/99), configurable permissions & passwords | |
| Programming Control | IR authentication required; auto-lock after 30min; read-only mode when authentication fails | |
| Communication Address | 12-bit configurable address | |
| Installation & O&M | Installation Rules | No live installation/wiring; install in well-ventilated, dry, fire-resistant indoor area; unsealed/long-stored meters must be re-inspected |
| Wiring Rules | Correct wiring per diagram; use copper wires/terminals; tighten screws to avoid overheating | |
| Calibration Notes | Turn off IR light sources during programming; no current during reset/parameter modification; reset demand after period change | |
| Warranty & Environmental Protection | Warranty | 3-month return, 1-year replacement, 3-year repair; 24h free hotline: 4008817000 |
| Recyclable Components | PC housing, fiberglass PCB, metal parts, paper packaging | |
| Special Disposal | Built-in lithium battery |
