Mid-Continent Instrument MD50 Installation Manual And Operating Instructions

INSTALLATION MANUAL AND

OPERATING INSTRUCTIONS

MD50-( ) Series

Static Electrical Power Inverter

REV. D February 24, 2011 MANUAL NUMBER 9017039

MID-CONTINENT INSTRUMENT CO., INC.

9400 E. 34

phone [phone] • fax [phone] • web www.mcico.com

th

Street N., Wichita, KS 67226 USA

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:

Mid-Continent Instruments

Attn: Customer Service Dept.

9400 E. 34

th

ST North

Wichita, KS 67226 USA

Phone [phone] Fax [phone]

We welcome your comments concerning this manual. Although every effort has been made to keep it
free of errors, some may occur. When reporting a specific problem, please describe it briefly and include
the manual part number, the paragraph/figure/table number, and the page number. Send your
comments to:

Mid-Continent Instruments

Attn: Technical Publications

9400 E. 34

th

ST North

Wichita, KS 67226 USA

Phone [phone], Fax [phone]

[e-mail]

www.mcico.com

© Copyright 2010

Mid-Continent Instrument Co., Inc.

REV. D February 24, 2011 2 Manual Number 9017039

REVISION DETAIL

Date Approved Detail

Rev.

A 02/26/10 BAW/JRC Initial release.
B 07/06/10 BAW/MKN Update Section 2.4 to add limitation statement regarding output.
C 07/20/10 MKN/BAW Update unit picture with True Blue Power label.
D 02/24/11 JDS/BAW Added section 3.3.2, and figure 3.4.

REV. D February 24, 2011 3 Manual Number 9017039

TABLE OF CONTENTS

SECTION 1 GENERAL DESCRIPTION

1.1 INTRODUCTION

1.2 TECHNICAL SPECIFICATIONS

1.2.1 ELECTRICAL ATTRIBUTES

1.2.2 PHYSICAL ATTRIBUTES

1.2.3 QUALIFICATIONS

SECTION 2 INSTALLATION CONSIDERATIONS

2.1 COOLING

2.2 EQUIPMENT LOCATION

2.3 ROUTING OF CABLES

2.4 LIMITATIONS

SECTION 3 INSTALLATION PROCEDURE

3.1 GENERAL INFORMATION

3.2 UNPACKING AND INSPECTING

3.3 CABLE HARNESS

3.3.1 WIRE GAUGE SELECTION

3.3.2 PIN ASSIGNMENT INFORMATION

3.3.3 HARNESS VERIFICATION

3.4 MOUNTING

3.5 INSTALLATION COMPLETION

SECTION 4 OPERATION

4.1 ELECTRICAL PERFORMANCE

4.2 PROTECTIVE FEATURES

SECTION 5 CONFORMANCE

5.1 CONTINUED AIRWORTHINESS STATEMENT

5.2 ENVIRONMENTAL QUALIFICATION STATEMENT

NUMBER LIST OF TABLES AND FIGURES

1.1 MODELS TABLE

1.2 PHYSICAL ATTRIBUTES TABLE

1.3 PERFORMANCE TABLE

3.3 CONNECTOR PINOUT FIGURE

3.3 CONNECTOR PINOUT TABLE

3.4 EXAMPLE WIRING DIAGRAMS

3.5 MD50 OUTLINE DRAWING FIGURE

3.6 MD50 MOUNTING ADAPTER FIGURE

4.1 THD PERFORMANCE

4.2 TEMPERATURE PERFORMANCE

REV. D February 24, 2011 4 Manual Number 9017039

SECTION 1 GENERAL DESCRIPTION

1.1 INTRODUCTION

The model MD50 series Static Electrical Power Inverter is a lightweight power converter that translates a
20 to 36 VDC input to a 115 VAC output at 60 Hertz and provides 500 watts (VA) of power. The
alternating current output is defined as a pure sine wave with less than 3% of total harmonic distortion
for clean, noise-free, harmonic-free power to supply nearly any common commercial or consumer load
rated for a nominal input of 115VAC. The MD50 series Inverter is FAA certified to TSO C73 and tested to
rigorous environmental standards and levels of RTCA DO-160. The small size and light weight in
conjunction with its installation flexibility inside or outside the pressure vessel make it an ideal choice for
aircraft power needs while reducing the challenges associated with other similar products.

Highlighted features include short circuit protection, overload capability, low voltage shut-down,
temperature monitoring, a self-resettable over-temperature disable, and a remote on/off function. The
rugged extrusion that houses the unit is designed to help dissipate heat and provide mechanical strength
against vibration or other possibilities of damage. Two independent fans allow for a smaller uni t and
provide a quieter operation while keeping the internal components cool and extending the life of the unit.

1.2 TECHNICAL SPECIFICATIONS

1.2.1 ELECTRICAL ATTRIBUTES

Characteristics:

Input Voltage: Rated 28VDC nominal; 20-36VDC certified
Input Power: 17-25 amps; 0.2A at no load
Output Voltage: 115VAC ±3% at 60 Hertz ±0.1% (single phase)
Output Power: 500 watts (500 VA at power factor = 1)
Output Waveform: Pure sine wave
Power Factor: -0.8 to +0.8
Efficiency: 88% nominal
Total Harmonic Distortion (THD): < 3%; See Figure 4.1

1.2.2 PHYSICAL ATTRIBUTES

Characteristics:

Weight: 3.9 pounds
Dimensions:
(not including connector mate)

Mating Connector (and cable clamp): MS3106A-18-9S or equivalent (MCI P/N 9016905-1 and -2)
Mounting: Base mount – orientation not critical

1.2.3 QUALIFICATIONS

Specifications:

Qualification: FAA TSO-C73
Environmental Qualification: RTCA DO-160F Environmental Category

Altitude: -15,000 ft to +55,000 ft
Temperature: -55°C to +70°C (-67°F to +158°F); See Figure 4.2

Table 1.1

6.71 inches long (8.15 inches – mounting base)

6.34 inches wide

2.74 inches high

Table 1.2

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Table 1.3

REV. D February 24, 2011 5 Manual Number 9017039