PowerGuard TPS-115 115 VAC / 400 Hz Converter System — 3-Phase 400 Hz AC + 28 VDC

The PowerGuard TPS-115 — 115 VAC / 400 Hz Converter System is built to meet the 400 Hz AC and 28 VDC supply needs of military platforms in a single compact unit. It converts 230 VAC grid power into a 3-phase 115 VAC L–N, 400 Hz AC output and, in addition, provides 28 VDC outputs through isolated AC/DC converters.

All AC and DC outputs are individually switchable, with current and voltage measured and monitored in real time. An MCU-based smart control unit and an RS-485 interface allow the system to be monitored, controlled and diagnosed remotely.

Power architecture:

• Input: 200–240 VAC, 50 Hz; input protection against overvoltage and surges
• AFE (Active Front End) topology: High power factor, low harmonic distortion, minimal impact on the grid
• Total DC output power: 600 W; ripple and noise max. 150 mVp-p
• Isolation: Every power converter and every output module independently isolated
• Connections: Industrial terminal blocks for input and outputs

Control, monitoring and diagnostics:

• Control: MCU-based smart control board; separate remote ON/OFF for every AC phase and every DC output
• Communication: 1 × RS-485 HD, 10 Mbps; real-time current/voltage, status and fault data
• Status outputs: Open-drain outputs for voltage status and system health
• BIT (Built-In Test): Automatic self-test twice per second with fault reporting
• Fault diagnosis: Approximately 90% accuracy with a JIT (Just-In-Time) approach
• Protection: Overvoltage (OVP), overcurrent / overload (OCP / OLP), overtemperature (OTP)

Mechanical and environmental:

• Military land platforms: 115 VAC / 400 Hz and 28 VDC supply for command, control and mission electronics
• Mobile mission systems: Field-deployed radar, communication and sensor systems
• Command and control centres: Monitored power for mission-critical equipment
• Test and validation systems: Power electronics and military electronics testing
• Naval platforms: Mission electronics and auxiliary systems on ships and boats
• Forward bases and field operations: Passively cooled, remotely monitored power in harsh conditions

TPS-115 is sized for mission electronics that need a 400 Hz AC supply and 28 VDC at the same time, on land platforms as well as on ships and boats. Typical integrations:

• Land vehicles and field-deployed systems: command, control and mission electronics, and field-deployed radar, communication and sensor systems, supplied with 3-phase 115 VAC L–N, 400 Hz (600 VA) and three isolated 28 VDC outputs (600 W total) from one 215 × 340 × 123 mm unit with 4-point base-flange mounting
• Ships and boats: mission electronics and auxiliary systems fed from a 200–240 VAC, 50 Hz supply, with every AC phase and every 28 VDC output switched remotely
• Test and integration benches: powering 400 Hz and 28 VDC military electronics during test and validation, with voltage and current read on every output

For the platform's mission computer or monitoring system, TPS-115 reports real-time current, voltage, status and fault data over RS-485 HD (10 Mbps), and its open-drain status outputs give a hardwired voltage-status and system-health signal. BIT runs automatically twice per second, and fault diagnosis with the JIT approach is approximately 90% accurate. Passive, fanless cooling (a temperature-activated fan is optional) supports operation from −40 °C to +55 °C.

On most platforms, 400 Hz power and 28 VDC power come from two separate devices. TPS-115 combines both in a single compact 215 × 340 × 123 mm enclosure and makes every output individually monitored and switchable. For higher power or outdoor use, the PowerGuard Outdoor 60/400 Hz Frequency Converter and the 115/200 VAC 400 Hz Static Frequency Converter are in the same family.

Corporate assurance: TEDEG Defence is an approved supplier of ASELSAN, Roketsan and the Turkish Ministry of National Defence (MSB), with NATO supplier registration under NCAGE: TM885.

Images: The images on this page are representative (3D model).