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2.4.4 EMI Filter Dimensions (optional equipment)
Inch [mm]
2.5 Power Supply Requirements
This mast requires a 28VDC power supply that meets the characteristics set forth by MIL-STD-
1275. If the application or installation does not allow for such a power supply, storage batteries
or a power supply supplemented with a capacitor bank are also viable options.
The Mast System has a steady state current draw up to 40 amps between 20 and 33 VDC
including with heavy side loads, or when worn or dirty. Further, the Motor could theoretically
briefly (milliseconds) see as much as 160 amps of inrush current. Any impedance in the power
supply or leads will reduce this figure and could prevent the mast from operating.
Table 2-5 lists the specifications for the auto-resetting circuit breaker in the system.
Functional Characteristic
Breaker Current Rating
Approximate Open Time 1.8 Seconds at 600% Rated Current
Approximate Open Time 2.3 Seconds at 500% Rated Current
Approximate Open Time 4.3 Seconds at 400% Rated Current
Approximate Open Time 8.8 Seconds at 300% Rated Current
Approximate Open Time 18.2 Seconds at 200% Rated Current
Must Carry 100% Rated Current for Minimum 1 Hour
* Cole Hersee P/N: 30172-50 Circuit Breaker Used
Contact The Will-Burt Company with any questions.
TP-5418901-F
August 2020
Table 2-5 Circuit Breaker Specifications
Original Instructions
S
AL O
TILETTO
PERATING
Specification*
50
300
250
200
150
100
50
I
NSTRUCTIONS
2-11
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