2.5.4
Current Rating
**************************************************************************
NOTE: Indicate maximum current rating on the
drawings. If no drawings are furnished with the
specifications, specify the current rating here.
**************************************************************************
Provide filters in ratings indicated.
2.5.5
Pass Band
Provide pass band suitable for use with [50] [60] [400]-Hz power source.
Total harmonics generated by the insertion of a power line filter shall not
increase line voltage distortion more than [5] [2.5] percent with a unity
power factor load.
2.5.6
Voltage Rating
**************************************************************************
NOTE: Indicate power line voltage on the contract
drawings. If no drawings are furnished with the
specifications, specify the power line voltage.
**************************************************************************
As required for circuits indicated. Direct current (resistive) voltage
drop through filter shall not exceed 0.5 volt when filter is operating at
rated current. The [50] [60] [400]-Hz ac voltage, within resistive load
variations from 10 percent to 100 percent rated load, shall vary not more
than plus or minus one percent of rated line voltage at unity power factor.
2.5.7
Drainage of Stored Charge
Provide filters with bleeder resistors to drain stored charge from
capacitors when power is shut off. Provide drainage of stored charge in
accordance with NFPA 70, Article 460-6.
2.5.8
Temperature Rise
Temperature rise shall not exceed 25 degrees C when operating at full rated
load in a free space environment equivalent to that specified in MIL-F-15733
with an ambient temperature of 65 degrees C. When filters are mounted in
an enclosure as specified herein, temperature rise of hottest filter shall
not exceed 40 degrees C at full load when operating in an ambient
temperature of 65 degrees C. Materials and components of filter shall not
exceed maximum acceptable temperatures specified in UL 1283.
2.5.9
Dielectric Withstand Voltage
Provide filters which, as a minimum, conform to values of dielectric
withstand voltage specified in [MIL-F-15733] [UL 1283].
2.6
MARKING OF FILTER UNITS
Provide manufacturer's nameplate on each filter unit stating rated current,
rated voltage, operating frequency, number of phases for which filter unit
is designed, manufacturer's name, total filter unit weight, and model
number. Mount nameplate on filter unit to be visible after installation
without removing cover plates or disturbing interior parts or wiring. Mark
SECTION 16280N
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