Power Management & Protection

Three units in this category: the TPB-01 reverse polarity protection unit for battery lines up to 500 A, the EBB supercapacitor backup power unit with a 3600 F supercapacitor and the 21-phase voltage measurement unit. The protection table on this page shows which unit protects against what; for loads that need uninterrupted 115 VAC 60 Hz, the military UPS is the PowerGuard MIL-UPS-2K3.

For short-term, lightweight backup, the PowerGuard EBB Auxiliary Battery Unit: 3600 F supercapacitor, 16–32 VDC, 3 hours of supply after the ignition is switched off, at least 10 minutes of additional power, 90% charge in 30 minutes at 22 ± 5 °C, no more than 1 kg. For long-duration, higher-power supply (28 VDC / 10 kW) with the main engine off, see the Auxiliary Power Units (APU) category, and for uninterrupted 115 VAC 60 Hz the PowerGuard MIL-UPS-2K3.

The unit reports voltage, state of charge (SoC), state of health (SoH) and capacity to the vehicle mission computer over CAN-Bus (500 kbps, selectable rates); BIT groups faults into at least 4 categories. The power / CAN connection is a 12-pin DT04-12PB-L012 (or equivalent) connector, mounting is 4-point via the side flanges, and the dimensions are 185 × 180 × 120 ± 10 mm. A front-panel switch selects operational / maintenance mode, and the supply can only be cut with a digital key available to authorised users. It has overcharge, over-discharge, overcurrent, short-circuit and temperature protection plus 2 × 30 A automotive blade fuses.

On 12 V / 24 V vehicles where there is a risk of wrong connection during battery replacement or jump-starting, the PowerGuard TPB-01 protects the alternator and the vehicle electronics: up to 500 A, internal diode technology, circuit interruption within milliseconds on reverse polarity, and time control that shuts the alternator off 8 s after the excite signal drops. The battery line enters through 2 × Pg21 metal cable glands and the load / alternator line leaves from the opposite face; excite and control signals connect to the J1 4-pin circular connector, and the unit bolts down at 4 points through its flanged base. It can be combined with the Military Vehicle DC Power Distribution Unit for the vehicle's 28 VDC distribution.

The PowerGuard Voltage Measurement Unit measures 0–300 VAC, 50 / 60 Hz voltage on up to 21 phase inputs (7 groups × 3 phases, with a common neutral per group) on a single board with ±1% accuracy; it measures voltage only, not current. Readings are sent in real time over Ethernet (RJ45) using a fixed, factory-configured protocol, and SCADA or host software can read and log them. It is powered from 220 VAC ±10% and typically draws less than 10 W; 20–28 AWG wires connect to screwless terminals. The ordering code selects a board-only or enclosed version, the number of phases from 01 to 21 and, for the enclosed version, one of three paint colours.

The EBB is designed for −40 °C … +60 °C operation and −55 °C … +70 °C storage; its datasheet states that the mechanical interfaces of the aluminium enclosure are MIL-STD-810G compliant and its cables IPC/WHMA-A-620 compliant. The TPB-01 operates from −40 °C to +120 °C in an IP67 black anodised aluminium enclosure. The Voltage Measurement Unit is designed for −32 °C … +55 °C. These products are designed to the conditions stated in their datasheets; if your programme needs a test report, request it at the quotation stage stating the standard and method number.

The vehicle bus voltage (12 / 24 / 28 VDC), the load to be backed up and for how long, the maximum current on the battery line, the number of phases to be measured with the enclosed / board-only preference, and the communication interface (CAN-Bus, Ethernet) are enough for a quotation; send them through the quote form. Turkish and English datasheets for the EBB and TPB-01 and a Turkish datasheet for the Voltage Measurement Unit are on the product pages.