TDG-EDP-D0X Military Vehicle DC Power Distribution Unit — 4 Inputs, 400 A Busbar

The TDG-EDP-D0X DC Power Distribution Unit collects energy from several DC sources on a military vehicle at a single point and distributes it to the vehicle's systems with full protection. It combines four inputs — Battery 1, Battery 2, the alternator and the battery charger — on positive and negative 400 A busbars. Output lines are protected by MIDI-type fuses.

The unit contains a 500 W converter from 12 VDC to 28 VDC, so power arriving at 12 VDC can be converted to feed the 28 VDC lines. Input and load contactors, an emergency stop button and a battery isolator control when the batteries are connected to the system and when they are disconnected. Two thermostat-controlled axial fans cool the panel.

The enclosure is made from 5000-series aluminium. The panel is watertight to the MIL-STD-810G Method 506.5 Procedure I rain test. Cable entries use IP67 PG cable glands, and the cover is fitted with an EMI gasket. Four military paint options are available.

Inputs, busbar and outputs:

Operating logic (threshold values):

• Adjustable thresholds: The control unit's switch-on voltages are fixed; all other values can be adjusted.
• Bypass switch: A switch inside the panel overrides the threshold values.
• Emergency stop: Pressing the emergency stop button disconnects both the input and the load contactor.

Protection and safety:

• Emergency stop button
• Battery isolator
• MIDI-type fuse on every output
• EMI/EMC protection: EMI gasket

Mechanical and environmental:

Part number and paint options (TDG-EDP-D0X):

• Dual-battery military vehicles: Bringing two battery banks, the alternator and the battery charger together on one busbar
• Distributing 28 VDC vehicle loads: Feeding mission equipment through 30, 60 and 100 A MIDI-fused lines
• Using 12 VDC sources: Converting 12 VDC power to the 28 VDC lines with the built-in 500 W converter
• Mounting points exposed to rain: Watertight enclosure tested to MIL-STD-810G Method 506.5
• Maintenance and emergencies: Cutting distribution quickly with the emergency stop button and battery isolator

TDG-EDP-D0X brings the battery, alternator and charger connections into a single panel. Busbars, fuses, contactors and power conversion share one aluminium enclosure, so connection, protection and switching are managed from one point. Three spare MIDI fuses in each of four ratings (30 A to 200 A) make fuse replacement in the field straightforward.

Because most threshold values are adjustable, the unit can be adapted to different vehicle electrical architectures, while the control unit's switch-on voltages stay fixed. The thermostat-controlled fans only run when needed and ramp up gradually: they stop below 25 °C and reach full performance at 45 °C.

For protecting battery connections against reverse polarity see the TPB-01 Reverse Polarity Unit; for AC-side distribution see the PowerGuard AC Power Distribution Panel.

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.