ANSI NEMA C82.3-2016 pdf free download.American National Standard for Electric Lamps— Reference Ballasts for Fluorescent Lamps
1 Scope
This standard describes the essential design features and operating characteristics of reference ballasts for fluorescent lamps. The items specified are those that have been found necessary to ensure accurate and reproducible results when either lamps or ballasts are being tested. It includes requirements for both line frequency and high-frequency circuits. The specific values of rated input voltage and impedance for each size of lamp are listed in the applicable ANSI C78 lamp standard.
2 Normative references
The following standards contain provisions which, through reference in this text, constitute provisions of this American National Standard. At the time of publication, the editions indicated were valid. All
standards are subject to revision, and parties to agreements based on this American National Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below.
ANSI C78.81 Double-Capped Fluorescent Lamps—Dimensional and Electrical Characteristics
ANSI C78.375 Fluorescent Lamps—Guide for Electrical Measurements
ANSI C78.901 Single Base Fluorescent Lamps—Dimensional and Electrical Characteristics
ANSI C82.1 Line Frequency Fluorescent Lamp Ballast
ANSI C82.1 1 High-Frequency Fluorescent Lamp Ballasts (Consolidated)
ANSI C82.1 3 Definitions—for Fluorescent Lamps and Ballasts
IES LM-9 IESNA Approved Method for the Electrical and Photometric Measurements of Fluorescent
Lamps
3 Definitions
See ANSI C82.1 3 for related definitions.
4 Marking
The reference ballast shall be provided with durable legible marking as follows:
Fixed-impedance type
a) the words “reference ballast” or “HF (high frequency) reference ballast” as applicable, in full;
b) manufacturer’s name and model number;
c) manufacturer’s serial number;
d) lamp type, wattage, and current;
e) rated supply voltage and frequency; and
f) impedance.
Adjustable-impedance type
a) the words “reference ballast” or “HF reference ballast” or “HF Power Supply” as applicable, in full;
b) manufacturer’s name and model number;
c) manufacturer’s serial number;
d) impedance range at rated frequency (or frequencies);
e) maximum voltage per element and maximum across unit;
f) maximum current;
g) frequency; and
h) connection diagram.
5 Design characteristics
5.1 General design for line frequency reference ballasts
A line frequency reference ballast is a self-inductive coil, with or without an additional series resistor for power factor adjustment, designed to give the operating characteristics of Clause 6.
It may be used either in a circuit employing a starter or, where applicable, in a circuit including separate power sources to heat the lamp cathodes. Further details of those circuits are given in ANSI C78.375.
5.2 General design for high-frequency reference ballasts at 25 kHz
A high-frequency reference ballast is a resistor or choke-coil designed to give the operating
characteristics of Clause 7.
5.3 Permanence of impedance
5.3.1 Fixed-impedance type ballasts
Since this type of reference ballast is intended to serve as a permanent baseline of reference, it is vitally important that the ballast is constructed as to provide permanence of impedance under normal conditions of use and abuse.
A recheck of the impedance of the ballast shall give values within 0.1 % of those previously determined.
5.3.2 Adjustable-impedance type ballasts.
This type of reference ballast, when adjusted to any given value of impedance, shall be capable of
holding that adjustment through normal periods of use. For this purpose, suitable means shall be
provided for mechanically locking the movable core (or other movable parts) in any desired position.
5.4 Enclosure
A reference ballast shall be enclosed for mechanical protection. In the case of the adjustable-impedance- type ballast, the series resistor need not be in the same enclosure with the reactor. Care should be taken for proper conduction of the dissipated wattage losses.
