ANSI NEMA C82.11-2017 pdf free download – Lamp Ballasts — High Frequency Fluorescent Lamp Ballasts.
4.2Color coding of ballast leads4.2.1Supply leads
The following color codings are for the supply lead wires of ballasts:
On ballasts with two supply lead wires, when one lead wire connects to a neutralwire, that lead wire shall be white or neutral gray and the other shall be black.On ballasts with two supply lead wires that connect to ungrounded lines, bothleads shall be black and white.
Ballasts that connect to both single ended and polyphase can have white and blackwires. When the white wire is not at neutral potential, it shall be indicated by a markerstripe added by the installer at the time of installation
4.2.2 Lamp lead wires-Table 1
The following color codings are for the lamp leads of electronic ballasts:
On a single-lamp ballast of the continuously heated cathode type (rapid start), theleads to that lamp cathode operated at the highest voltage with reference to eitherof the supply leads shall be RED.The lead wires connected to the other cathodeshall be BLUE.
On a multi-lamp ballast of the series connected continuously heated cathode type(rapid start), or series connected instant start type, the leads to that lamp cathodeoperated at the maximum voltage with reference to either of the supply leads shallbe RED. The leads connected to the cathode at the other extreme of voltage
relative to the RED cathode shall be BLUE.For two-lamp rapid start ballasts, theleads to the pair of common cathodes shall be either YELLOW-BLUE TRACEROR YELLow.
When more than two lamps are operated in a rapid start mode, the leads to eachcathode or pair of cathodes, beginning at the highest voltage (RED) end shall havecolors used in the order shown in Table 1. lf a circuit-interrupting feature is
required for instant start ballasts, the lamps leads for the circuit-interrupting leadsshall be YELLOw.
On a (1),(2), or (3) lamp instant start ballast where the lamps are operatedindependently and have a common connection, the common lamp lead shall beRED, and the independent lamps lead wires shall be BLUE.
On a (4) lamp instant start ballast where the lamps are operated independentlyand have a common connection, the common lead wires shall be YELLoW orYELLOW/WHITE and the independent lamp leads shall consist of two BLUE andtwo RED leads.
If a circuit-interrupting feature is required, the lamp lead wires for the circuit- interrupting lead wires shall be YELLOW and the independent lamp lead wires shall be BLUE.
4.2.3 Other ballast types Ballasts not covered by 4.2.1 and 0 shall comply with these requirements insofar as possible.
5Ballast performance5.1General
Measurements necessary to determine ballast performance shall be made inaccordance with ANSI C82.2 or ANSI C82.11 Annex C as applicable.
5.2Starting conditions
5.2.1Starting
For satisfactory lamp starting，a ballast，when operated at any supply voltagebetween 90% and 110% of its rated supply voltage and frequency,shall follow therequirements of this standard or as specified otherwise in the normative referencedANiSI c78.81 or ANSI C78.901 (to be referred to hereafter as C78.81 or C78.901).When ballasts are designed to operate lamps in parallel circuits, the relevantrequirements shall be met for each separate lamp, both with and without lampsoperating or preheating in other circuits.
5.2.2 Fixture and circuit grounding
Rapid-start lamps,and switch-start (preheat-start) lamps when operated in circuitsof the rapid-start type, require a starting aid consisting of a metal strip(usually anintegral part of the fixture), the width of which shall be at least equal to the lampdiameter.
This surface shall extend essentially the full length of the lamp and shall beconnected to ground.The distance from the starting aid to the bulb wall, asmeasured in a direction normal to the surface of the starting aid, shall not begreater than specified in the normative referenced C78.81 or C78.901.
Lamp shall not contact the ground plane. Minimum distance to be 0.12 inch(3mm).For remote mounted lamps and dimming applications, greater spacing maybe needed.
Rapid start ballast circuits and connections (including ground connections) shall besuch that the potential difference between the starting aid and one of the cathodesof each lamp will be greater than the minimum specified in C78.81 or C78.901.Use on ungrounded supplies is not recommended.(Unless specifically designed toaccommodate ungrounded supplies)
5.2.3 Lamp starting requirements based on ballast type
High frequency ballasts shall meet the requirements of starting time and startingcurrent as listed and as graphically defined in Figures 1a,1b, and 1c.ANSI NEMA C82.11 pdf download.