Overview
In a busy telecom base station or DC charging hub, operators need reliable energy tracking.
DJSF1352-RN delivers real-time DC voltage, current, power, and bidirectional energy data.
It supports dual DC inputs, multi-tariff metering, and RS485 with Modbus/DLT645 protocols.
Perfect for solar PV, charging piles, and industrial DC systems.
By enabling accurate consumption analysis and remote monitoring, it cuts energy waste, optimizes billing, and boosts operational efficiency—all in a compact DIN-rail design.
Highlight
Multi-Input & Measurement
- Dual DC inputs
- Voltage 0-1000V DC
- Shunt/Hall current
- Power & bi dir energy
- Multi tariff metering
High Accuracy & Data Logging
- Class 0.5 accuracy
- Max/Min logging
- Demand recording
- 12 month history
- Event & freeze logs
Flexible Communication & Control
- RS485 Modbus/DLT645
- 2 relay outputs
- 2 digital inputs
- Alarm functions
- Pulse output
Reliability & Ease of Use
- Wide power 85 265V
- Low power ≤3W
- DIN35 rail mount
- Temp –25°C~65°C
- High insulation
Function
| Measurement | Metering | Others |
| DC Voltage | Total Forward Active Energy | Multi-tariff (Peak/Flat/Valley) |
| DC Current | Total Reverse Active Energy | Demand Logging (Forward/Reverse) |
| DC Power | Tariff Energy (Peak/Flat/Valley) | Historical Energy (Last 12 Months) |
| Power Direction Indicator | Monthly Energy Query | Digital I/O |
| Max/Min Voltage/Current Logging | Four-Quadrant Reactive Energy (Optional) | Temperature Monitoring (Optional) |
| Demand (Forward/Reverse) | Extremum Logging | |
| Event Logging (I/O, Programming) | ||
| Data Freeze (Instant/Scheduled) |
Specification
| Parameter | Specification |
| Voltage Input | DC 0–1000V (Refer to wiring diagram) |
| Current Input | Shunt: 0–75mV; Hall Sensor: 0–5V / 100mA |
| Accuracy Class | Class 1 (default), Class 0.5 (optional) |
| Energy Metering | Forward/Reverse Active Energy, Multi-tariff |
| Digital Input | 2 dry contacts |
| Relay Output | 2 channels, 2A/30VDC or 2A/250VAC |
| Pulse Output | 1s pulse, 1 energy pulse (configurable constant) |
| Communication | RS485 (standard), optional dual channels |
| Protocols | Modbus-RTU, DL/T 645-2007, DL/T 698 (optional) |
| Power Supply | AC/DC 85–265V, DC 12V / 24V / 48V (optional) |
| Power Consumption | ≤ 3W |
| Operating Temp | -25℃ ～ +65℃ |
| Storage Temp | -40℃ ～ +80℃ |
| Humidity | ≤ 93% RH, non-condensing |
| Altitude | ≤ 2500m |
| Insulation Resistance | ≥ 40MΩ |
| Dielectric Strength | 3.5kV/1min (Power/Signal/Others) |
| Impulse Withstand | ±6.5kV |
| MTBF | ≥ 50000h |
| Mounting | DIN35mm rail |
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FAQ
Yes, with optional D function, it supports two independent DC inputs, ideal for multi-loop monitoring such as dual-gun chargers or PV arrays.
Set the Curr.SH option to on in the meter menu; otherwise, voltage may display as negative.
Standard protocols include Modbus-RTU.
Yes, the meter records the last 12 months of historical energy data and supports data freeze (instant/scheduled).
Alarm thresholds for over/under voltage, current, and power can be set in the menu, with relay output mode selectable.
Summary
This versatile meter offers reliable DC energy monitoring with flexible communication and tariff options. Ideal for basic DC applications, it provides accurate data for local display and remote integration, supporting efficient energy management.
