SPT SPTUSBSCB Technisches Dokument

INSTALLATION MANUAL AND

OPERATING INSTRUCTIONS

SPTUSBSCB and SPTUSBSCC

Dual USB Charging Port

SPT Dual Charge Port

By Superior Panel Technology

FOREWORD

This manual provides information intended for use by persons who, in accordance with current

regulatory requirements, are qualified to install this equipment. If further information is required,

please contact:

Superior Panel Technology

PO Box 1562 Chesterfield, VA 23832

Phone: 562-776-9494

REVISION HISTORY

Rev. Date Approved Detail

A 06/25/19 WB Initial release.

TABLE OF CONTENTS

SECTION 1 GENERAL DESCRIPTION

1.1 INTRODUCTION

1.2 TECHNICAL SPECIFICATIONS

1.2.1 ELECTRICAL ATTRIBUTES

1.2.2 PHYSICAL ATTRIBUTES

SECTION 2 PRE-INSTALLATION CONSIDERATIONS

2.1 COOLING

2.2 EQUIPMENT LOCATION

2.3 ROUTING OF CABLES

SECTION 3 INSTALLATION PROCEDURES

3.1 GENERAL INFORMATION

3.2 UNPACKING AND INSPECTING

3.3 CABLE HARNESS

3.3.1 WIRE GAUGE SELECTION

3.3.2 WIRE ASSIGNMENT INFORMATION

3.3.3 HARNESS VERIFICATION

3.4 MOUNTING

SECTION 4 OPERATION

4.1 ELECTRICAL PERFORMANCE

4.2 PROTECTIVE FEATURES

4.2.1 SHORT CIRCUIT PROTECTION

4.2.2 OVER-CURRENT PROTECTION

4.2.3 LOW INPUT VOLTAGE SHUTDOWN

4.2.4 OVER-TEMPERATURE

SECTION 5 CONFORMANCE

5.1 CONTINUED AIRWORTHINESS STATEMENT

SECTION 1: GENERAL DESCRIPTION

1.1 INTRODUCTION

Both SPTUSBSCB and SPTUSBSCC units here on out will be referred to as the “SPTUSBSC”! They are

the same exact unit with the exception of the color anodizing of the front face plate. The SPTUSBSC

Dual USB Charging Port is an accessory that converts 14-28 volts of DC electrical input from the

aircraft to standard 5V power to charge any electronic product that charges using a USB connector.

The SPTUSBSC provides two Universal Serial Bus-A (USB-A) ports and can be rear mounted with an

attractive face plate for a clean, finished look.

This Dual USB Charging Port is designed as a DCP (Dedicated Charging Port) to industry-standard

protocol per the USB Battery Charging 1.2 Compliance Plan. Early-generation or smaller consumer

electronics typically accept one (1.0) amp of power during charging. However, newer electronics, such

as the Apple iPad, other tablets and larger devices can accept and, in some cases, require up to 3.4

amps of power to charge and operate. As a high power DCP, the SPTUSBSC can provide up to 3.4

amps of power to charge any USB device, including the higher demand products. Unlike most dual

USB chargers which provide 1.0 amp on the first port and 2.1 amps on the second port, the

SPTUSBSC can provide 3.4 amps of power to both ports simultaneously. With features like short circuit

protection, over-current protection, low voltage shut-down and temperature monitoring, it can handle

unforeseen conditions safely.

Small, compact and powerful, with plenty of installation flexibility, the SPTUSBSC is an ideal choice

when selecting a highly useful and effective addition for any aircraft.

1.2 TECHNICAL SPECIFICATIONS

1.2.1 ELECTRICAL ATTRIBUTES

Input Voltage: 14-28 VDC

Input Power: 48 watts max; 3.4 amps @ 14 VDC / 1.7 amps @ 28 VDC

Output Voltage: 5 VDC ±0.25 per port

Output Power: 3.4 amps max per port

Efficiency: 90%~97%

Table 1.1

1.2.2 PHYSICAL ATTRIBUTES

Weight: 44 grams, 0.097 pounds

Dimensions: (not including connector) .83 inches wide X 1.41 inches high X 1.46 inches deep

Charging Ports Type: USB Standard-A

SECTION 2: PRE-INSTALLATION CONSIDERATIONS

2.1 COOLING

No external cooling is required. The unit will become warm when in use. This is normal and within

operational parameters. No special mounting considerations are required; however, mounting to a

metal surface can help dissipate any heat generated and extend the life of the product.

2.2 EQUIPMENT LOCATION

The SPTUSBSC Dual USB Charging Port can be mounted in any orientation and can be mounted in the

cockpit or cabin. It is designed to be panel mounted or can be installed with an optional L bracket.

2.3 ROUTING OF CABLES

Avoid sharp bends in cabling and routing near aircraft control cables. Avoid close proximity and

contact with aircraft structures, avionics equipment or other obstructions that could chafe wires and

cause a short.

SECTION 3: INSTALLATION PROCEDURES

3.1 GENERAL INFORMATION

This section contains interconnect diagrams, mounting dimensions and other information pertaining to

the installation of the SPTUSBSC Dual USB Charging Port. After installation of cabling and before

installation of the equipment, ensure that power and ground are applied to the proper wire.

3.2 UNPACKING AND INSPECTING EQUIPMENT

When unpacking this equipment, make a visual inspection for evidence of any damage that may have

occurred during shipment. The following parts should be included:

a. Dual USB Charging Port

b. Connector Kit

1. Aluminum face plate B for Black

or C for Clear.

2. Screws, #4-40 flat-head (2)

c. Installation Manual

d. Cutout template

Optional Equipment Available:

a. Under panel “L” bracket mounting kit

-SPTUSBSC-LB

Equipment Not Provided:

a. Cable Harness Wire

b. Circuity Breaker

Recommendation 5 amp (14v sys)

3 amp (28V sys)

3.3 CABLE HARNESS

Construct the cable harness following the instructions outlined below and per Figure 3.1

below. Refer to Section 2: Pre-Installation Considerations, for routing precautions.

3.3.1 WIRE GAUGE SELECTION

Use of PTFE, ETFE, TFE, Teflon or Tefzel insulated wire is recommended for aircraft use.

The wire harness should utilize 18-20 AWG stranded wire. Refer to table 3.1 below.

Wire Gauge Wire Length

18 AWG stranded wire >14 ft

20 AWG stranded wire <14 ft

TABLE 3.1

Wire Gauge and Length

3.3.2 WIRE ASSIGNMENT INFORMATION

INPUT POWER:

Red wire – Positive DC input +14 to +28 VDC power

Black wire – Negative DC input / ground

3.3.3 HARNESS VERIFICATION

WARNING:

Failure to install aircraft power and ground wires in the proper wiring configuration will

permanently damage the unit.

Once the cable harness is prepared, prior to connecting the SPTUSBSC, activate the

aircraft power bus and use a multimeter to verify that aircraft power and ground is

supplied with appropriate voltage on the proper wire to be connected to the SPTUSBSC.

3.4 MOUNTING

Prepare the panel cutout using the supplied cutout template.

FIGURE 3.2

SPTUSBSC Outline Drawing

DO NOT USE above drawing for template (not to scale).

Use template provided.

SECTION 4: OPERATION

4.1 ELECTRICAL PERFORMANCE

The SPTUSBSC Series Dual USB Charging Port converts an aircraft (DC) input voltage within the range

specified to a 5V (DC) output. This output power is applied to each of the USB ports as an

independent circuit. The USB D+ and D- data lines communicate with the USB portable device to tell

the device it is a dedicated charging port (DCP), capable of a higher current than a standard USB port.

This allows the USB portable device to draw up to 3.4 amps per port. The unit is designed as a DC-to-

DC converter and supports multiple fast charging protocol technologies. Each port is independent and

reduces the output current to a safe level if the USB portable device draws excess current, is shorted

or has a fault.

If the temperature of the SPTUSBSC becomes elevated due to a fault or excessive load, the device will

seamlessly communicate with the USB portable device to lower the charge current. This allows the

device to continue charging while the unit returns to a temperature within designed limits. When the

temperature returns to a safe level the SPTUSBSC will automatically reestablish the higher charge

current level with the device and continue charging.

4.2 PROTECTIVE FEATURES

4.2.1 SHORT CIRCUIT PROTECTION

The SPTUSBSC is capable of surviving a short circuit event without permanent damage. The

unit goes into an over-current condition so that the average current is significantly reduced,

and the device is protected.

4.2.2 OVER-CURRENT PROTECTION

The SPTUSBSC monitors the current draw individually on each port. During an over-current

condition, the voltage is reduced.

4.2.3 LOW INPUT VOLTAGE SHUTDOWN

If the input voltage applied to the SPTUSBSC drops below 10 VDC the unit will shut down

until the applied voltage returns to a level within range.

4.2.4 OVER-TEMPERATURE

When the temperature of the SPTUSBSC becomes elevated, the unit communicates with the

USB portable device to reduce the charge current output (1 amp limit). When the

temperature returns to an acceptable level the unit automatically returns to a higher charge

current as required (up to 3.4 amps).

SECTION 5: CONFORMANCE

5.1 CONTINUED AIRWORTHINESS STATEMENT

No periodic scheduled maintenance or calibration is necessary for continued airworthiness of the

SPTUSBSC series Dual USB Charging Port. If the unit fails to perform to specifications, the unit must be

removed and serviced by Superior Panel Technology.

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