| StartGuard Provides Voltage Protection During Engine Start The abrupt DC system voltage drop that accompanies engine starting can cause microprocessor-driven communication and navigation electronics 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-line and the internal battery is recharged by the alternator. |
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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)
4 amp-hour capacity
Certified by DOT and IATA for shipment by air
Replacement battery P/N: 591-0412-0
Back-up Capacity (Fully Charged): (See matrix below)
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Model
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Input
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Back-Up Capacity
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Dimensions
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Weight
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1 Minute
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2 Minutes
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Inches
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Centimeters
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Lbs
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Kg.
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NS-12-20
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13.8-14.8 VDC Nominal
15.5 VDC Max |
20 amps
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15 amps
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H
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W
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D
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H
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W
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D
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5.5
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2.5
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8.25
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4.9
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3.5
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20.1
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12.5
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8.9
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| NAV-PAC® Marine communication/navigation electronics such as programmable data transceivers, GPS 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 these conditions from affecting electronics. • Prevents voltage ”drop-out” to electronics during engine start • Absorbs line "spikes" • Filters out electrical interference • Provides supplemental voltage/battery back-up for up to 15 min. • Remote monitor panel included. |
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U.S. PATENT #: 5172292
Model: NP-12
Input Voltage: 13.8-14.8 VDC nominal, 15.5 VDC max.
Output:15 amps Max. @ 12 Volt
Back-Up Power:
7 Amps for fifteen (15) minutes
10 Amps for eight (8) minutes
15 Amps for two (2) minutes
Battery: Sealed Rechargeable 4.0 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. Replacement battery P/N: 591-0412-0
Noise Filtering: Audio through 200 MHZ
Voltage Spike Protection: Transient energy capability; 100 Joules, 4,000 amps Max (8 x 20 micro seconds)
Size
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Inches
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Centimeters
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Weight
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H
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W
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D
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H
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W
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D
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lbs.
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Kg.
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5.25
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6.2
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7.4
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13.3
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15.7
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18.8
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5.9
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2.7
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Panel Dimensions: 3.5” W x 2” H (8.9 x 5.1 cm)
Application Benefits Include:
• Operate electronics at optimal input voltage, even from nearly drained batteries
• Boost voltage to compensate for voltage drops in long wire runs from batteries
• Eliminate voltage drops during momentary high current drain from batteries, as during engine start
• Eliminate voltage fluctuation from charge sources
• Eliminate voltage overshoot due to sudden removal of high current load

Specifications
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Model
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Input
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Output
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Output Amps
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Range
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Voltage
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Int.
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Cont.
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| 12-12-12I |
10-16 VDC
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13.6 VDC
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12
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8
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| 12-12-35I |
10-16 VDC
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13.6 VDC
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35
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20
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| 48-24-3I |
20-56 VDC
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24.5 VDC
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3
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3
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| 48-24-6I |
20-56 VDC
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24.5 VDC
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6
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4
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| 48-24-9I |
20-56 VDC
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24.5 VDC
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9
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5
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| 48-24-18I |
20-56 VDC
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24.5 VDC
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18
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10
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See Isolated Series Converters for complete specifications and mechanical description.
Options/Factory Modifications
• Operation as a battery charger (contact factory)
• Parallel/redundant operation (contact factory)
• High vibration mounting kit (see bottom of page)
• Non-standard output voltage (contact factory)
Filter Features:
• Heavy duty aluminum construction
• Operate on 6-48 VDC systems
• Integral mounting flanges for secure installation
• Nickel-plated brass stud connectors on alternator filters accommodate high current cables and terminals
• Color coded wire leads on all other models make in-line installation easy
Models:
APS-70 Max. Load 70 amps,, 3.25" x 4.5" x 3.1", 2 lbs..
APS-160 Max. Load 160 amps, 9.0" x 4.5" x 3.1", 5 lbs.
Voltage Rating: 6-50 VDC, neg. ground

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Extreme vibration mounting kit
The Extreme Vibration Mounting Kit is available to protect NEWMAR power converters from the extreme stresses of shock and vibration when mounted on highvibration vehicles. The kit (pictured here) replaces the standard vibration kit provided with the unit and fits into the unit's mounting flange to act as a "super shock absorber" for electronics in high-vibe applications. It is available to fit all NEWMAR units from 2 to 70 lbs. Specify KITL for units which weigh 215 lbs. and KitH for units which weigh 16-70 lbs. |
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