Naval power balancing demands drive new 1U UPS deployments… SynQor has released the UPS-1500-x-1U-3, a 3-phase 115 Vrms line-to-line uninterruptible power supply designed for naval and military platforms operating under strict phase-balancing requirements.

Announced on 19 May 2026, the new system targets submarine and surface vessel deployments where unbalanced single-phase loads can breach MIL-STD-1399-300B limits and complicate platform integration, an innovative addition to Astute’s SynQor range.

The unit extends SynQor’s military field-grade power portfolio and arrives as defence integrators continue to consolidate power conversion, redundancy and battery backup into smaller rack footprints. According to the company’s press release, the UPS balances phase currents within the ±5% threshold required for naval vessels and within ±3% for submarines under MIL-STD-1399-300B specifications. The system conditions 115V or 230V single-phase loads so they appear to the source as balanced 3-phase loads with “nearly zero reactance”.

1U Naval UPS Targets Phase-Balancing Constraints

The UPS-1500-x-1U-3 supports AC input ranges from 102-156 Vrms line-to-line and 59-90 Vrms line-to-neutral at 45-65Hz. Output configurations include 115V or 230V AC at 50Hz, 60Hz or 400Hz, with output power rated at 1250W / 1500VA.

SynQor’s datasheet claims that the platform supports fault-tolerant parallel operation of up to 32 units using an integrated electronic breaker system. Configurations include single-phase, split-phase and 3-phase N+M redundant architectures. A floating neutral option is also available for Type I naval power compliance.

“The UPS-1500-x-1U-3 balances phase currents within the strict requirements dictated by MIL-STD-1399-300B,” SynQor said in their announcement.

DC Output Flexibility Expands Platform Integration Options

The system includes two optional DC output ports. The DC1 option delivers 12-50Vdc at up to 500W. DC2 configurations can provide regulated or semi-regulated 24V, 28V or 50Vdc outputs at up to 1250W where DC input functionality is not required.

SynQor also offers a droop-load option for DC load sharing. Remote management functions are handled through an Ethernet SNMP module with monitoring and alert capability via trap and email notifications.

Battery runtime configurations exceed 10 minutes, 13.5 minutes or 16 minutes at full power depending on configuration. The UPS uses a sealed lithium-ion battery pack and is housed within a 1U rack-mount chassis measuring 17in x 22.53in x 1.73in, with a quoted weight of 33lbs.

“The system’s backup power is provided by a compact, low-weight, and highly efficient sealed lithium-ion battery pack,” SynQor stated in their news release.

Military Compliance Remains Central to Naval Power Procurement

The UPS-1500-x-1U-3 complies with MIL-STD-1399-300B, MIL-STD-461G and MIL-STD-810G standards covering naval electrical systems, electromagnetic compatibility and environmental resilience.

SynQor describes the system as engineered for “extreme electrical, shock/vibration, and environmental conditions” associated with military and maritime deployments. The release positions the product against existing market offerings on power density, weight and configuration flexibility.

As naval electronics architectures continue to add compute-intensive and single-phase payloads, balancing compliance requirements against rack space and redundancy constraints remains a persistent integration issue across submarine and surface vessel programmes.

Damian Semple, Franchise Marketing Manager, Astute Group, comments: “Naval power systems increasingly need flexible UPS platforms that can handle mixed load profiles without adding integration complexity. Products that combine phase balancing, redundancy and configurable outputs in a 1U form factor can help reduce qualification time and simplify long-term support planning.”

Astute is an authorised distribution partner for SynQor.

Learn more https://www.astutegroup.com/

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