Xtralis VESDA VPS-215-E Aspirating Smoke Detector Power Supply
Overview: Uninterrupted Lifecycle Power for Aspirating Detection
Aspirating smoke detection systems demand continuous, unfailing electrical inputs to maintain active air-sampling networks across high-stakes facility footprints. Even a momentary power interruption renders highly sensitive laser-based optical chambers blind, posing an immediate threat to high-value industrial assets. The Xtralis VESDA VPS-215-E is an advanced, highly regulated power supply unit engineered specifically to support these mission-critical life safety architectures. Seven Star LLC distributes this specialized power module to industrial operators across Oman and the Middle East, serving as a reliable independent vendor. The device provides a stable, low-noise DC output while managing automatic backup battery switchover mechanics to safeguard facility detection coverage. By implementing this ruggedized power module, plant engineers ensure compliance with strict international fire protection directives while eliminating downstream voltage instability.
Power Regulation and Battery Charging Principle
The operational logic of the power unit focuses on dual-stage voltage regulation and intelligent battery asset management. The incoming alternating current (AC) utility power is filtered against high-frequency industrial noise before entering an advanced switched-mode power conversion stage. This topology steps down the voltage to a highly stable direct current (DC) output, precisely calibrated to meet the exact current draw requirements of VESDA VLF, VLC, or VLP laser detectors.
A primary measurement and control logic within the unit is its temperature-compensated float charging circuit. The charging circuit monitors the temperature at the battery and adjusts the float voltage accordingly. This tracking prevents battery gas output during the intense ambient heat cycles common in Middle Eastern control rooms, maximizing the operational lifespan of the connected backup lead-acid batteries. If the primary AC supply fails, the unit automatically switches its output over to the connected standby battery, and switches back to the main power supply output once mains power is restored, so the aspirating detector continues sampling on standby power without operator intervention. The unit also carries out full-impedance battery checks and monitors for a missing, disconnected or degraded battery, signalling any such condition through its volt-free fault relay.
Engineering Design of the Xtralis VESDA VPS-215-E
The mechanical architecture of the device is housed within a heavy-duty, powder-coated steel enclosure designed to resist the physical demands of industrial substation and plant room installations. The internal layout is split into two distinct zones: an upper section that isolates the high-voltage AC terminals and power electronic assemblies, and a lower compartment sized to securely hold two standard 12 V 7 Ah backup batteries, which is the maximum battery size the VPS-215-E enclosure and charger are rated for.
The enclosure features multiple pre-punched conduit knockouts to simplify field wiring and maintain a clean layout within existing industrial control cabinets. For integration into centralized supervisory control networks, the main circuit board incorporates multiple volt-free (dry contact) fault relays. These relays are configured to trip under distinct failure modes, including primary mains failure, battery disconnection, and low battery voltage states. This engineering approach allows maintenance personnel in Oman to track the real-time structural health of the fire sub-system via remote SCADA panels or main fire alarm control terminals.
Key Features and Safety Compliance Standards
The power unit integrates a comprehensive array of technical protections designed to satisfy strict B2B engineering specifications:
Full certified compliance with EN54-4 and VdS standards, satisfying the core regulatory baselines for fire detection power equipment.
Integrated deep-discharge battery protection logic that automatically isolates the batteries when voltage drops below a critical threshold, preventing permanent cell damage.
Independent current-limiting circuits on the main load and battery charging paths, stopping a short-circuit on a field detector from causing a total power system collapse.
Front-panel diagnostic light-emitting diodes (LEDs) that provide local visual readouts of mains status, battery health, and common fault conditions.
Low-output voltage ripple performance, ensuring that clean, harmonic-free DC power is delivered to sensitive laser-based aspirating smoke detectors.
Installation, Fusing, and Fault Signalling
Physically, the Xtralis VESDA VPS-215-E is a compact wall-mounted unit measuring approximately 226 mm high by 286 mm wide by 113 mm deep and weighing around 2.5 kg before batteries are fitted, rising to roughly 8 kg once a full standby battery complement is installed. It is secured through four 5 mm fixing holes on 220 by 180 mm centres, and the cable knockouts are positioned to align with the mounting footprint of VESDA detector enclosures so that the power supply and its associated aspirating detector can be installed as a matched pair on the same section of wall. That matters in practice, because a tidy, short and mechanically supported DC run between the power supply and the detector is the simplest way to avoid volt-drop and induced-noise problems on a long sampling-network installation.
Circuit protection is deliberately conventional and field-serviceable rather than proprietary. The battery path is protected by an automotive-style MINI blade fuse and the incoming AC supply by a 20 mm HRC anti-surge cartridge fuse, both replaceable by a competent fire-systems technician without returning the unit to the manufacturer. Fault reporting is handled through a single volt-free changeover contact set, wired as normally open, common and normally closed, and rated for 1 A at 30 VDC, which is sufficient to drive a general-purpose input on a VESDA detector or a monitored fault input on a conventional fire alarm control panel. The unit is rated for indoor use at up to 95 percent relative humidity non-condensing, and carries EN 54-4 certification together with VdS approval and CE marking, the combination normally demanded by consultants and civil defence authorities reviewing life-safety submissions in Oman and the wider GCC.
Industrial Applications across the Middle East
Seven Star LLC facilitates the distribution of this critical safety hardware across numerous high-availability infrastructure networks:
Data Centers and Server Farms: Providing clean, battery-backed power to high-sensitivity smoke detection networks in clean-room environments.
Oil and Gas Control Rooms: Safeguarding localized aspirating systems protecting critical switchgear and distributed control system (DCS) cabinets in Oman.
Electrical Substations: Ensuring continuous fire safety monitoring for high-voltage transformer bays and cable basement vaults.
Pharmaceutical and Clean Manufacturing: Supplying reliable power to contamination-free sampling networks requiring continuous air tracking.
Logistics and Automated Warehousing: Supporting expansive air-sampling arrays installed across high-roof storage facilities in the GCC region.
Technical Specifications Table
| Specification | Technical Data |
| Product Model Number | Xtralis VESDA VPS-215-E |
| Equipment Classification | EN54-4 Certified Power Supply Unit (PSU) |
| Primary Input Voltage | 230 VAC (+10% / -15%), 50 / 60 Hz |
| Nominal Output Voltage | 20.0 – 30 VDC output range (temperature-compensated battery float; 24.5 VDC ±2% with no battery connected) |
| Maximum Continuous Current | 0.5 A certified to EN 54-4 / 1.0 A non-certified |
| Battery Backing Support | 2 x 12 V sealed lead-acid (VRLA), maximum 7 Ah |
| Enclosure Material | Heavy-Gauge Powder-Coated Steel Chassis |
| Ingress Protection Rating | IP30 (Optimized for Indoor Control Environments) |
| Fault Output Interfaces | Volt-Free Dry Contacts (Mains Fault, Battery Fault) |
| Protective Features | Deep Discharge Protection, Overcurrent Foldback, Short-Circuit Protection |
| Operating Temperature Range | -10°C to +40°C |
Request a Quote for Xtralis VESDA VPS-215-E Aspirating Smoke Detector Power Supply
Seven Star LLC is a reliable independent supplier of specialized fire automation components and machinery protection systems across Oman and the GCC. For a formal B2B price quotation, system load calculations, or to request the official datasheet for the Xtralis VESDA VPS-215-E Power Supply Unit, contact our corporate engineering sales team today.
Related Products
Xtralis is a leading global provider of powerful solutions for the very early and reliable detection of smoke, fire, and gas threats.As a specialized supplier in Oman and the GCC, Seven Star LLC offers Xtralis’s flagship technologies, including VESDA aspirating smoke detection (ASD), OSID open-area imaging, and Li-ion Tamer battery rack monitoring systems.These advanced platforms actively sample air to detect microscopic combustion particles before visible smoke or open flames develop.Engineered for high-stakes environments such as data centers, clean rooms, and heavy industrial facilities, Xtralis systems provide maximum operational uptime and safety compliance while eliminating false alarms.
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