Newmar’s Powering the Network with DC Power Conditioners such as the Start Guard and NAV-PAC. The abrupt DC system voltage drop that accompanies engine starting can cause microprocessor-based voice and data transmitters to “dump” programmed memory. StartGuard and NAV-PAC solves this problem by providing supplemental voltage to sensitive electronics while the engine is cranked. The NAV-PAC also provides a stop to noise and line spikes from alternators and motors.

Mobile DC UPS
Start Guard™ | NavPac™ | Mobile Data Power System

StartGuard™
Provides Voltage Protection
During Engine Start

The abrupt DC system voltage drop that accompanies engine starting can cause microprocessor-based voice and data transmitters to “dump” programmed memory.

StartGuard solves this problem by providing supplemental voltage to sensitive electronics while the engine is cranked. It contains a sealed rechargeable battery which is switched on-line to electronics when the starter switch or solenoid is engaged. When the engine is running StartGuard automatically goes off-lineand the internal battery is recharged by the alternator.

Newmar’s Power Conditioners contain a sealed rechargeable battery which is switched on-line to electronics when the starter switch or solenoid is engaged. When the engine is running StartGuard and NAV-PAC automatically goes off-line and the internal battery is recharged by the alternator. The NAV-PAC Prevents voltage “drop-out” during engine start, Absorbs line "spikes", filters out electrical interference, Provides supplemental voltage/battery back-up for up to 15 min. with a remote monitor panel provided.

Specifications
Input Voltage: 13.8 - 14.8 VDC nominal, 15.5 VDC max.
Relay Activation Input Voltage: 7-15 VDC
Output: 20 amps max.
Battery: 12 VDC, sealed rechargeable, 5-7 year life (typical) 5 amp-hour capacity, Certified by DOT and
IATA forshipment by air.
Back-up Capacity (Fully Charged): (See matrix)

Model	Input	Back-Up Capacity		Dimensions						Weight
		1 Minute	2 Minutes	Inches			Centimeters			Lbs	Kg
NS-12-20	13.8-14.8 VDC Nominal 15.5 VDC Max	20 amps	18 amps	H	W	D	H	W	D	5.5	2.5
				8.25	4.9	3.5	20.1	12.5	8.9

NAV-PAC™

Now Available In 24 Volt

Mobile communication electronics such as programmable two-way radio and data transceivers, vehicle location systems and other microprocessor-controlled devices require clean and steady DC input power. Their sensitive circuitry is highly vulnerable to voltage drop from engine start, noise and line spikes from alternators and motors, and conducted noise from various other electronic devices. NAV-PAC prevents all of these problems and is in use by thousands of Emergency Vehicles nation wide.

• Prevents voltage “drop-out” during
engine start
• Absorbs line "spikes"
• Filters out electrical interference
• Provides supplemental voltage/battery
back-up for up to 15 min.
• Remote monitor panel provided (12V unit only)

Model: NP-24 U.S. PATENT #: 5172292
Input Voltage: 27.6-29.6 VDC nominal, 30 VDC max.
Output: 15 amps Max. @ 24 Volt
Back-Up Power: 12 & 24 Volt Models
8 Amps for fifteen (15) minutes
12 Amps for eight (8) minutes
18 Amps for two (2) minutes
20 Amps for one (1) minute
Battery: Sealed Rechargeable 5.0 Amp-Hour, 5-7 years typical life, can be replaced. Low-voltage disconnect circuit protects battery from total discharge. Certified by DOT and IATA for shipment by air.
Noise Filtering: Audio through 200 MHZ
Voltage Spike Protection: Transient energy capability; 100 Joules, 4,000 amps Max (8 x 20 micro seconds)

Size

Model Inches Centimeters Weight

H W D H W D lbs. Kg.

NP-12 5.25 6.2 7.4 13.3 15.7 18.8 5.9 2.7

NP-24 6.0 6.75 7.5 15.25 17.14 19.0 8 3.6

Panel Dimensions: 3.5” W x 2” H (8.9 x 5.1 cm)

Download PDF Data Sheet

Mobile DC UPS
Mobile Data Power System

The Mobile Data Power, model MDP-25, is a DC UPS that solves the common problem of lengthy reboot sequences, system crash, data and hard drive corruption in mobile computer work stations due to a low voltage and loss of power as a result of intermittent or poor vehicle battery condition. In addition, the MDP provides a low voltage output warning signal to terminals (such as Motorola® MW 800 series work stations) allowing orderly automatic shutdown of the powered device, protecting data and preventing hard drive corruption.

Utilizing a high speed sensor circuit, when primary vehicle voltage drops below a critical point, the internal 9AH battery is switched on-line in milli-seconds, assuring no interruption to the powered device(s). The MDP-25 has an internal 3 step, temperature compensated charger that maintains its reserve battery at full charge, ready to go on-line when a fault or degradation of primary vehicle battery occurs. This functionality assures continued operation of mobile computers under a variety of adverse vehicle battery conditions.

Housed in a rugged aluminum case and heavy duty mounting plate, the unit is designed for installation in emergency vehicles, service and other utility vehicles that require a steady source of voltage for mobile computers, work stations, and electronics.

Download PDF Data Sheet

Protects mobile computers against system crash, lengthy reboot
sequences, and loss of data due to:
• Voltage dip during engine cranking
• Voltage drop and decay due to loading high power accessories, and aging batteries
• Voltage loss due to cycling of master disconnect switch and battery failure.

Provides supplemental voltage in milli-seconds to mobile data devices
when low vehicle battery is sensed.
• Immediately augments power to electronics when needed and fully powers electronics
if critical low voltage condition persists.

Built-in Multi-Stage filter provides clean power required by mobile electronics
• Eliminates noise and interference
• Transient protection prevents damage to sensitive circuitry due to voltage spikes

Provides output warning signals to mobile computers (such as Motorola®
MW 800 series work stations)
• Initiates low voltage shut down sequence in mobile computer, protecting data and hard drive.
• Alerts when system is operating on battery back-up

Internal 3 stage, temperature compensated charger maintains back-up
battery in fully charge stand-by state.
• Provides isolated power source, 12 volts @ 5 amps for 60 minutes, 10 amps for
20 minutes, 25 amps for 8 minutes
• Battery easily accessed by front panel door

Model MDP-25
Input range: 10.2V – 15.5V (start-up @ 11.5V)
Standby Current Draw: <50mA
Output: 12 VDC
Maximum Load Current: 25 amps

Battery Connect Sequences:
• Internal battery switches online when vehicle battery voltage = 10 V ± 1 V
(Vehicle battery disconnects after 3 seconds if low voltage condition persists)
• Vehicle battery reconnects @ 11.5 V ± 1 V
• Internal Battery Low Voltage Disconnect: < 9.6 V

Battery Specification:
• 9 AH, sealed Lead Acid – typical life 5 years, easily replaced via front panel access door.
• Power delivery @ > 10.2 volts @ 25°C
   • 5 amps @ 60 minutes
   • 10 amps @ 20 minutes
   • 25 amps @ 8 minutes

Output Signals for terminals (such as Motorola® 800 series work stations):
• When imminent Voltage decay to 11.5 VDC is projected (adjustable set point)
• On Charge/Discharge

Internal Battery Charger:
• Charge Current: 2 amps max., three-stage
(Bulk, Absorption, Float)
• Temperature Compensated

Temperature rating:
Operating 0 – 50° C

Mechanical:
• Aluminum case with access door for easy removal of battery
• Heavy duty mounting suitable for commercial vehicle use
• Size: 5.75” H x 6” W x 8.5” D; (14.6 x 15.24 x 21.59 cm)
• Weight: 9.4 lbs.

Options:
• Remote LED indicator panel
• Power OK
• Operating on Back-Up