True Blue Power
®
5
Manual Number 9018067
a division of Mid-Continent Instrument Co., Inc.
Revision C, May 27, 2014
SECTION 1
GENERAL DESCRIPTION
1.1
INTRODUCTION
The model TI250 series Static Electrical Power Inverter is a lightweight power inverter that translates a 20
to 36 VDC input to a 115 VAC output at 60 Hertz and provides 250 watts (VA) of power. The alternating
current output is defined as a pure sine wave with less than 2% 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 TI250 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, a remote on/off function, and a fault
indication output. The TI250 has the same connector of legacy designs plus ground fault interrupter
protection. The rugged extrusion that houses the unit is designed to help dissipate heat and provide
mechanical strength against vibration or other possibilities of damage. The TI250 is engineered to run
cooler and features a fanless design, which saves energy, reduces weight and allows flexible installation
locations. At only 2.2 pounds, it is lighter and smaller than competing inverters. Additionally, the primary
stage of the TI250 utilizes current mode control for increased reliability and safety.
1.2 TECHNICAL
SPECIFICATIONS
ELECTRICAL ATTRIBUTES:
Input Voltage:
Rated 28VDC nominal; 20-36VDC certified
Input Current (full load):
9 amps nominal; 13 amps max
Input Current (no load)
150 milliamps
Input Current (ON/OFF = OFF)
50 milliamps
Recommended Circuit Breaker:
15 amps
Output Voltage:
115VAC ±3% at 60 Hertz ±0.1% (single phase)
Output Power:
250 watts (250 VA at power factor = 1)
Output Waveform:
Pure sine wave
Power Factor:
-0.8 to +0.8
Efficiency:
85 – 90% nominal
Total Harmonic Distortion (THD):
Less than 2%
Table 1.1
PHYSICAL ATTRIBUTES:
Weight: 2.2
pounds
Dimensions:
(not including connector mate)
6.74 inches long x 5.94 inches wide x 2.02 inches high
Mating Connector (and cable clamp): MS3106A-18-9S (MCI P/N 9016905-1, -2)
Mounting:
Base mount – orientation not critical
Table 1.2
QUALIFICATIONS:
Certification: FAA
TSO-C73
Environmental Qualification:
RTCA DO-160G Environmental Category; See Section 5.2
Altitude:
-15,000 feet to +55,000 feet
Temperature:
-55°C to +70°C (-67°F to +158°F)
Table 1.3
