ANSI C78.389-2004 (R2009)

Introduction
1. Scope and purpose
2. Normative references
3. Measurement of Lamp Voltage, Current, and Power
    3.1 General
    3.2 Power supply
         3.2.1 Harmonic content
         3.2.2 Voltage regulation
         3.2.3 Source Impedance
    3.3 Ambient condition
    3.4 Ballasts
    3.5 Circuits and equipment grounding
    3.6 Lamp position
    3.7 Lamp stabilization
         3.7.1 General
         3.7.2 Stabilization requirements
    3.8 Instruments
         3.8.1 Accuracy
         3.8.2 Impedance
         3.8.3 Root-mean-square measurements
    3.9 Corrections to compensate for pressure of instruments
         in the lamp circuit
         3.9.1 General
         3.9.2 Restoration-of-light method
         3.9.3 Correction for lamp ammeter reading
         3.9.4 Correction for lamp voltmeter reading
         3.9.5 Correction for lamp wattmeter reading
    3.10 Measurement of lamp amperes and volts at nominal lamp
         wattage
         3.10.1 Preferred method
         3.10.2 Alternate method
4. Measurement of lamp current factor
    4.1 General
         4.1.1 Methods of measurement
         4.1.2 Measurement of lamp current crest factor during
                lamp warm-up
5. Measurement of lamp starting
    5.1 General
    5.2 Conditioning of lamps for starting test
    5.3 Test equipment and power supply
         5.3.1 General
    5.4 Procedures
         5.4.1 Procedure A for lamps not requiring a starting pulse
         5.4.2 Procedure A for lamps requiring a starting pulse
6. Measurement of warm-up time
    6.1 General
    6.2 Test conditions
    6.3 Selection and handling of lamps
    6.4 Procedure
7. Testing lamps at maximum peak voltage across terminals
    7.1 General
    7.2 Circuit for measurement
         7.2.1 Circuit for testing lamps not requiring a starting
                pulse
         7.2.2 Circuit for testing pulse-start lamps at maximum
                peak voltage across lamp terminals
    7.3 Procedures
         7.3.1 Procedure for testing lamps not requiring a
                starting pulse
         7.3.2 Procedure for testing pulse start lamps
8. Measurement of maximum bulb and base temperature
    8.1 General
    8.2 Procedure
         8.2.1 Thermocouple method for bulb temperature
         8.2.2 Thermocouple method for base temperature
         8.2.3 Infrared-radiation method for bulb temperature
9. Measurement of lamp reignition voltage spike
    9.1 General
    9.2 Test circuit and equipment
    9.3 Procedure
10. Measurement of lamp reignition voltage (V[r])
    10.1 General
    10.2 Test circuit and equipment
    10.3 Procedure
11. Measurement of luminaire effect on lamp voltage rise
    11.1 General
    11.2 Test conditions
    11.3 Procedure
Annex A (normative): Containment testing procedure for metal
                       halide lamps with quartz arc tubes
Annex B (normative): Containment testing procedure for metal
                       halide lamps with ceramic arc tubes
Annex C (informative): Procedures for measurement of lamp starting
 C.1 Procedure B for lamps not requiring a starting pulse
     C.1.1 Metal Halide lamps
     C.1.2 High-pressure Sodium and Mercury Lamps
 C.2 Procedure B for lamps requiring a starting pulse
     C.2.1 Metal Halide lamps
     C.2.2 High-pressure Sodium lamps

Describes the procedures to be followed and the precautions to be observed in measuring the electrical characteristics of HID lamps as outlined in the ANSI specifications for mercury, high-pressure sodium and metal halide lamps, as referenced in Clause 2, Normative References.