Fire Protection Power Supply Monitoring Module
This series of voltage/current sensors consists of high-precision front-end sensing modules specifically designed to complement fire equipment power monitoring systems. Featuring a compact, rail-mounted design, these units are installed within the power distribution cabinets of various fire safety equipment (such as fire pumps, fire service elevators, and smoke extraction fans). They provide continuous, 24-hour real-time monitoring of the operational status of fire safety power supplies, accurately detecting power anomalies such as overvoltage, undervoltage, phase reversal, phase loss, and overcurrent.
Description
Product Advantages
1. Fully Integrated Monitoring · High Measurement Accuracy
Integrating both voltage and current detection, the unit comprehensively monitors for various power supply anomalies within fire protection systems—including overvoltage, undervoltage, phase reversal, and phase loss. With a measurement error margin of ≤ ±3%, it guarantees the absolute precision of all monitored data.
2.M-BUS Two-Wire Technology · Polarity-Free, Rapid Wiring
Communication and power supply are combined into a single line, allowing for polarity-independent wiring during field installation. This not only significantly reduces the likelihood of wiring errors by installation personnel but also minimizes wiring clutter and interference within the distribution cabinet, boosting installation efficiency by 50%.
3.Integrated Bus Short-Circuit Isolation · Fault Containment
The unit features high-specification, integrated protection against short circuits in the communication line. Should a physical short circuit occur within a specific sensor unit or its branch line, the device automatically isolates itself from the main bus, ensuring that the normal monitoring operations of other fire protection power nodes remain completely unaffected.
4.Multi-Layer Password Protection · Customizable Alarm Thresholds
The system supports a multi-tiered password management hierarchy, preventing unauthorized personnel from arbitrarily altering system settings. Alarm thresholds can be flexibly adjusted to suit the specific power supply environment of the installation site, achieving a perfect balance between detection sensitivity and the need to prevent false alarms.
Applications & Selection
Serving as the core safety sentinel within fire linkage systems, this product is widely deployed in the main and backup power distribution boxes and control cabinets for all fire protection equipment throughout a building:
1. Control cabinets located in fire pump rooms and smoke extraction/ventilation fan rooms.
2. Power distribution boxes for fire elevators and fire-resistant rolling shutters.
3. Main power distribution boxes for fire emergency lighting units and evacuation guidance systems.
4. Main and backup power supplies for fire door monitoring devices and fire linkage control systems.
Product Specifications
| Product Model | BY-S2VA | BY-SVA | BY-S2V | BY-SV |
| GB 14287-2014 |  |
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| Function | M-BUS two-wire bus power supply and communication, non-polarity connection, with short circuit protection, can detect faults such as overvoltage, undervoltage, phase error, phase loss, and real-time display the operating voltage and current of fire fighting equipment. | |||
| Detection Function | Two channels of three-phase voltage + one channel of three-phase current | One channel of three-phase voltage + one channel of three-phase current | Two channels of three-phase voltage | One channel of three-phase voltage |
| Compatible Products | ||||
| Operating Power Supply | ||||
| Power | ||||
| Alarm Threshold | ||||
| Alarm Time | ||||
| Communication Bus | ||||
| Communication Distance | ||||
| Installation Method | ||||
| Overall Dimensions (mm) W×H×D (Width × Height × Depth) | 82×100×38.5 | |||
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