UFC 3-535-01
17 November 2005
13-16.1.11 Readable wiring diagram, indicating all customer connection points,
permanently mounted unobstructed in regulator.
13-16.1.12
Alarms, to be indicated on front of the unit:
13-16.1.12.1 Indicator that an open-circuit trip-out has occurred.
13-16.1.12.2 Indicator that an over current trip-out has occurred.
13-16.1.12.3 Warning indicator that the selected current step is not within 3 percent of
the set current values.
13-16.1.13 Nameplate securely attached to the exterior of the regulator. If on a readily
removable surface (such as a cover) the serial number should be duplicated elsewhere
on the regulator in a conspicuous place. The nameplate must contain as a minimum the
following:
Constant Current Regulator
Manufacturer's Name and Part Number:
Number of Current Steps: __________
Input : Volts _________ Hertz _________
Input Current at Full Load: _________
Remote Control Voltage: ________ Volts DC (or Volts AC)
Output: __________ kVA and KW at 6.6 (or 20) Amperes
Maximum Full Load Output Voltage: _________ Volts
Serial Number:
13-16.2
S-1 Plug Cutout
Comply with FAA AC 150/5340-4, Figures 13 and 14. Install in NEMA 1 enclosure.
13-16.3
Circuit Selector Switch
Comply with FAA AC 150/5345-5, L-847. For use when multiple circuits are connected
to a single constant current regulator, or for preventing interconnecting two regulators
on some installations that provide switching to a spare regulator. Input and control
voltages must be selected. Options typically include status indication and cabinet type.
13-16.4
Isolation Transformer
The following characteristics for L-830 (60 Hz) and L-831 (50 Hz) isolation transformers
represent current products and improve quality over the minimum FAA standards:
13-16.4.1
Minimum thickness of encapsulation: 6.5 mm.
13-16.4.2
Minimum power factor: 0.95 (at nominal resistive load and rated primary
current).
13-16.4.3
Maximum dielectric strength (hot and cold): 2 microamperes, with primary
tested at 15 KVdc and secondary tested at 5 KVdc.
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