Honeywell Mark III 1 115 Vac Input Power Requirements, 2 28 Vdc Input Power Requirements

Category A2, Pin Injection Tests (DO-160C Section 22.5.1)

Waveform 3 (DO-160D Section 22, Figure 22-4), Voc/Isc = 250V/10A, and Frequency = 1 Mhz + 20%. Waveform 4 (DO-160D Section 22, Figure 22-5), Voc/Isc = 125V/25A.

Category E3, Cable Bundle Tests, Cable Induction (DO-160C Section 22.5.2)

Waveform 1 (DO-160D Section 22, Figure 22-2), Vl/It = 300V/600A.

Waveform 3 (DO-160D Section 22, Figure 22-4), Vt/Il = 600V/120A, and Frequency = 1 Mhz and 10 Mhz

Lightning Direct Effects (DO-160D Section 23.0)

Category X, Not Applicable

Icing (DO-160D Section 24.0)

Category X, Not Applicable

ESD (DO-160D Section 25.0)

Category A, Equipment Installed, Repaired, or operated in an Aerospace Environment

DO-160D Marking (DO-160D Appendix A)

[(A2)(F2)W]BBB[(UF)(SCLMY)]EXXXXXZ[EBZ]A[EZ]Z[RRR]M[A2E3]XXA

5.5 Power Requirements

The MARK III is able to accept either 115 Vac 400 Hertz and/or 28 Vdc input power. The unit is designed so that if both sources are inadvertently connected, the MARK III or aircraft will not be damaged.

The following subsections specify the unit’s power requirements and operating conditions:

5.5.1 115 Vac Input Power Requirements

The MARK III meets DO-160D Section 16.0 category E requirements. It has the following operating voltage and frequency specifications and input power requirements:

Operating Voltage		Operating Frequency		Power Consumption
Nominal	115 Vrms	Nominal	400 Hertz	Nominal	50 Watts
Minimum	97 Vrms	Minimum	320 Hertz	Maximum	100 Watts
Maximum	134 Vrms	Maximum	480 Hertz

5.5.2 28 Vdc Input Power Requirements

The MARK III meets DO-160D Section 16.0 category BZ requirements. It has the following operating voltage and input power requirements:

Operating Voltage	Power Consumption
HONEYWELL Aerospace Electronic Systems	Page 55

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