Backup Power Monitoring: Keeping Your Power Always On and Always Reliable
UPS (Uninterruptible Power Supply) is an emergency power supply device that integrates power conversion, energy storage, and control functions—a complete power protection system combining rectifiers, inverters, batteries, static switches, and control circuits.
It serves two core functions:
- When utility power is normal, it filters out grid disturbances such as voltage fluctuations, surges, and harmonics, delivering a stable and clean power output;
- When utility power fails, it seamlessly switches to battery-supplied power (online UPS transfer time < 10ms), ensuring connected equipment remains operational and preventing data loss.
Which parts of the DC system require monitoring:
System Insulation Status (Unique to DC Panels)
Routine monitoring of positive/negative pole-to-ground insulation. However, some DC panels require AC intrusion monitoring—a feature currently not supported by our product.
Purpose: Prevent equipment damage from short circuits, avoid false circuit breaker tripping, and prevent both protection maloperations and failure-to-operate scenarios.
Battery Bank Health & Ambient Temperature (Battery Room)
Lead-acid battery monitoring.
Bus Voltage & Current (DC Metering)
Voltage Monitoring: Prevents battery overcharging and over-discharging.
Current Monitoring: Detects load fluctuations and internal faults (e.g., inrush current during breaker closing, short circuits).
Hardware Overview:
Model 1:ABAT100-HS Data Collector
-Application: Support collecting data from up to 120pcs battery cell monitor and further upstream data viaRS485 [MODBUS-RTU]; analysing remaining batterycapacity [soc, soH].
-Upstream Methods: RS485 [MODBUS-RTU protocol]
-Downsteam Methods: R12 (Self-defined protocol)
-Power Supply: 24Vdc
-Certificate&Standard:CE
Model 2: ABAT100-C Group Cell Current Monitor
-Application: Monitor charge&discharge current dataof one group of battery; moniotr ambient temperature-Measuring Current Range: Max 1000A AC-Measuring Temperature Range: -5°c~+105°C-Accuracy: +1% [Current]; +1′C [Ambinet temperature]
-Upstream Methods: Rl12 (Self-defined protocol)
-Power Supply: 24Vdc
-Standard&Certification: CE
Model 3: ABAT100-S Single-cell Monitor
-Application: Monitor inner resistance, voltagenegative pole temperature of single cell.
-Supported battery type: 2Vdc, 12Vdc lead-acid battery[Capacity less than 3000AH]
-Measurement Range: 2&6&12Vdc [Voltage]; 50~65535uU [inner resistance];-5°c~+105°C[Temperature]
-Accuracy: +0.1% [Voltage]; 1uÙ [inner resistanceresolution]; +1°C [Temperature]-Upstream Methods: R12 (Self-defined protocol)
- Power Supply: From monitoring single cellStandard&Certification: CE
Acrel DC Meters: Precision Monitoring for UPS DC Circuits
Stable monitoring of DC circuits is critical for ensuring the reliability of Uninterruptible Power Supply (UPS) systems. Acrel’s DJSF1352-RN DIN-rail DC Energy Meter and PZ72L-DE DC Digital Energy Meter are engineered for high-precision DC monitoring, providing dependable power data assurance for UPS systems.
DJSF1352-RN: The Comprehensive DC Monitoring Specialist
Featuring standard 35mm DIN-rail installation, the DJSF1352-RN supports dual DC inputs (optional) and delivers real-time measurement of key parameters including voltage (0-1000V), current, power, and bidirectional energy for UPS battery banks and DC busbars. Equipped with an RS-485 communication interface and compatible with both Modbus-RTU and DLT645 protocols, it seamlessly integrates into SCADA systems for remote data transmission and centralized management. With Class 1 or 0.5 high-precision metering, relay alarm output, and digital input functionality, it can promptly detect abnormal conditions such as overcharging, over-discharging, and load fluctuations, forming a digital safety net for UPS system security. The product has been successfully deployed in UPS energy metering systems in Russia, proving its robustness in demanding environments.
PZ72L-DE: The Panel DC Monitoring Solution
Designed for essential DC circuit monitoring needs in UPS systems, the PZ72L-DE offers a panel mount solution. This meter accurately collects bus voltage, current, and energy data to effectively prevent battery overcharge and over-discharge. Its clear LCD display and straightforward parameter configuration enable streamlined field operation and maintenance.
Combined Solution for Complete DC Link Monitoring.
When used together, these two meters provide comprehensive monitoring of the entire DC link—from battery to load—within UPS systems. This ensures power continuity, prevents data loss and equipment downtime risks, making them the ideal choice for data centers, telecom base stations, and industrial UPS applications.
Post time: Dec-22-2025
