Technical Guide
3.0kV Optical Isolation
35mm DIN-Rail Mounting
-40°C to +85°C Industrial
12-Month 1-to-1 Warranty
DeviceLab DL-P300 3-Phase Industrial Power & Energy Monitoring Module
Price:
Contact Us
Volume project quotation for M&E contractors and greenhouse gas inventory audits
DeviceLab DL-P300 is an industrial-grade multi-parameter energy monitoring module engineered for Energy Management Systems (EMS), greenhouse gas emissions auditing, and electrical switchboard (MSB/MDB) monitoring. Equipped with split-core CT clamps, it enables swift 10-minute retrofitting without wire cutting or plant power shutdown.
Key Technical Features:
- True RMS multi-parameter measurement: Phase/Line Voltage, 3-Phase Current, Active P, Reactive Q, Apparent S, PF Cosφ, Frequency
- High-accuracy split-core CT clamps: fast, safe 10-minute retrofit without cutting main power feed cables
- Measurement accuracy Class 0.5S complying with IEC 62053-22, bi-directional 4-quadrant energy accounting
- Equipped with RS485 Modbus RTU and optional Ethernet/WiFi pushing telemetry directly to cloud brokers via MQTT
Download Datasheet PDF
Direct technical project consultation:
0982 503 355 (Hotline/WhatsApp)
HARDWARE ARCHITECTURE & RELIABILITY
Key Technical Features
Engineered for extreme electromagnetic conditions in industrial control panels, substations, and smart facilities.
01
High-Precision Class 0.5S Industrial Metering
Dedicated 24-bit ADC metering engine accurately measures voltage, current, power, and accumulated kWh for energy audits and greenhouse gas inventory reporting.
02
Safe Split-Core CT Clamping
Supports 50A, 100A, 250A, 400A, and 1000A ranges. Safe millivolt secondary output eliminates high-voltage shock and open-circuit CT hazards during installation.
03
Phase Imbalance & Thermal Warning Diagnostics
Built-in algorithms detect phase imbalance and low power factor (avoiding utility penalty tariffs) with optional copper busbar temperature sensor inputs.
04
Full SCADA / BMS / EMS Interoperability
Standard Modbus register map integrates directly into Siemens Desigo, Schneider PowerLogic, factory SCADA, or cloud dashboards.
PRODUCT DATASHEET
Detailed Technical Specifications
All parameters measured and verified under laboratory stress testing and industrial environmental standards.
SPECIFICATION SHEET: DL-P300
● INDUSTRIAL COMPLIANT
| Measurement System | 3P4W (3-phase 4-wire) or 3P3W, voltage range 80–500 VAC L-L |
|---|---|
| Current Range | 5A–1000A via split-core CTs (333mV secondary input) |
| Accuracy Class | Class 0.5S (Active energy kWh per IEC 62053-22), Class 1 (Voltage/Current) |
| Measured Values | V, I, P, Q, S, PF (Cosφ), F (Hz), bi-directional kWh, kVARh, 31st harmonics THD |
| Communication | 1 × RS485 Modbus RTU (3.0kV isolated), optional RJ45 10/100M |
| Protocols | Modbus RTU, Modbus TCP, MQTT JSON (TLS encrypted) |
| Load Profile Storage | 90-day non-volatile flash load profile recording |
| Mounting | Standard 35mm DIN-rail (width 72mm / 4 electrical modules) |
| Warranty | 12 Months (1-to-1 immediate advance replacement) |
CABINET INSTALLATION GUIDELINES
Wiring Schematics & Installation Specs
Signal Wiring Standard Guidelines:
Voltage: Va, Vb, Vc, Vn via 2A fuses. CTs: clamp 3 split-core CTs around conductors A, B, C following P1->P2. RS485: twisted pair to DL-GW200 or SCADA.
35mm DIN-Rail Mount: Standard EN 50022 metal latch for rapid tool-less snap-on installation.
RS485 Signal Cable: Shielded Twisted Pair (STP 24 AWG) recommended with shield grounded to terminal GND.
120Ω Terminating Resistor: Enable terminating resistor at both extreme ends of lines exceeding 100 meters.
DC Industrial Power Supply: Connect standard 9–36V DC power (or 48V PoE where equipped).
FIELD IMPLEMENTATION
Typical Industrial Applications
Proven in factory automation, smart energy management, and industrial IoT retrofitting projects.
Building and factory Energy Management Systems (EMS).
Sub-metering production lines for precise product unit energy cost allocation.
Automated energy data logging for Scope 2 greenhouse gas reporting.
TECHNICAL DOCUMENTATION & ARTICLES
Related Application Notes & Guides
TECHNICAL DOCUMENTATION & ARTICLES
FREQUENTLY ASKED QUESTIONS
Technical FAQs on DL-P300
Engineered for extreme electromagnetic conditions in industrial control panels, substations, and smart facilities.
Is a full plant power shutdown required to install the DL-P300?
No power shutdown is needed at all. The DL-P300 uses external split-core current transformers (CTs) that clamp safely around live electrical cables in minutes without de-energizing machinery, ensuring 100% uninterrupted continuous plant operations during retrofits and energy monitoring upgrades in existing facilities.
Does the DL-P300 support Time-of-Use (TOU) tariff tracking and branch machine metering?
Yes. The module supports multi-tariff Time-of-Use (TOU: Peak, Standard, Off-Peak) energy registers, enabling factory management to accurately allocate electricity expenses per manufacturing shift, individual machine line, or department for thorough energy optimization, targeted peak shaving, and comprehensive factory production cost reduction strategies.
What measurement accuracy class does the DL-P300 energy meter achieve?
The DL-P300 meets IEC 62053-22 Class 0.5S accuracy for active energy (kWh) and Class 1.0 for reactive energy (kVARh). This verified precision delivers authoritative telemetry suitable for internal sub-billing, carbon accounting, energy audits, and factory ISO 50001 certification standards compliance reporting.
What current transformer (CT) ratings are supported by the DL-P300?
The device interfaces with split-core and solid-core CTs ranging from 50A, 100A, 250A up to 1000A using safe low-voltage mA or mV secondary signals. CT ratios are configurable via software, accommodating diverse main distribution switchboards, transformer feeders, and machine feeder panels.
Which communication protocols transmit energy telemetry from the DL-P300 to EMS software?
The DL-P300 features an isolated RS485 interface running standard industrial Modbus RTU at up to 115,200 bps. Through edge gateways, telemetry converts to Modbus TCP, MQTT, or RESTful APIs for real-time visualization in energy management systems (EMS) and plant SCADA software.
Can the DL-P300 detect phase imbalances, voltage sags, and harmonic distortions?
Yes. The unit computes maximum demand, phase angle, voltage imbalance, and total harmonic distortion (THD up to the 31st harmonic). Configurable threshold triggers trip alarm relays and publish immediate alert flags to SCADA central control rooms for rapid electrical fault prevention.
Can multiple DL-P300 units be daisy-chained inside the same electrical panel?
Yes. Each DL-P300 possesses a configurable Modbus Slave ID (1–247). Up to 32 meters can be daisy-chained on a single twisted-pair RS485 loop back to a single edge gateway, minimizing cabling complexity, panel space consumption, and installation costs in dense switchboards.
What warranty and integration documentation are included with the DL-P300?
DeviceLab backs the DL-P300 with a 12-month manufacturer replacement warranty. Integrators receive complete Modbus register maps, Python and Node-RED code samples, and direct engineering integration assistance for fast commissioning with existing factory automation networks, SCADA packages, and BMS monitoring platforms.
ENGINEERING PROJECT CONSULTATION
Request Quotation: DL-P300
Please submit your project specifications below. DeviceLab engineers will review and respond with formal pricing within 30 minutes.