Ballasts

ROMlight dimmable electronic ballasts can be purchased in a variety of voltages
and in models that drive Metal Halide lamps or High Pressure Sodium lamps.
The tables below show the different models and their individual attributes.

Ballasts for High Pressure Sodium Lamps

Model
Case Size
Lamp Watts
 Standard Line Voltage1
HPS-70
A
70
 120 or 240
HPS-100
A
100
 120 or 240
HPS-150
A
1502
 120 or 240
HPS-200
B
200
 120 or 240
HPS-250
B
250
 120 or 240
HPS-250
C
250
 120 to 277
HPS-310
C
310
 120 to 277
HPS-400
C
400
 120 to 277
HPS-600
D
600
 208 to 277

2ANSI Code S56

Ballasts for Metal Halide Lamps
Model
Case Size
Lamp Watts
 Standard Line Voltage1
MH-200
B
200
 120 or 240
MH-250
B
250
 120 or 240
MH-200
C
200
 120 to 277
MH-250
C
250
 120 to 277
MH-320
C
320
 120 to 277
MH-350
C
350
 120 to 277
MH-400
C
400
 120 to 277
MH-575
D
575
 208 to 277

1 a step down transformer is required for 347 volt circuits

Features & Benefits

Feature
Benefit
Certified to UL and ULC standards
  • Can be installed in all North American jurisdictions
Microprocessor Control
  • Provides all protective functions
  • Short circuit protection
  • Lamp "out of circuit" protection
  • Provides "soft" lamp start up
  • Longer lamp life
Active Power Factor Correction
  • Minimizes in rush current
  • Low Total Harmonic Distortion
High Frequency
  • No flicker
  • Higher lamp efficacy
  • Cooler lamp and ballast operation
  • Longer lamp life
  • Consistent colour rendering
Exceptionally low ballast loss
  • Increases energy savings
Crest Factor <1.45
  • Protects the lamp
Broad Operating Temperature
Range -30°C to +40°C Ambient Temperature
  • Can be used in most outdoor or indoor locations
Superior Lumen Maintenance
  • 90% of initial lumens at mean life
“No Lamp” feature
  • Prevents “end of lamp life” syndrome that can damage the fixture
Light Weight Design
  • Easy to install
  • Less expensive mounting details
  • Reduces housing, structure and pole costs
ROMport™
  • Multi-function ballast control
To download these specifications, click here

Specifications
Parameter
Value
Case Size (L x W x H)
 A – 6 3/16” x 4 1/16” x 2” (1.35 lbs)
B – 7 3/16” x 4 1/16 ” x 2” (2.75 lbs)
C – 10 5/8” x 6 1/2” x 3 3/4 ” (7.6 lbs)
D – 11 5/8” x 6 1/2 ” x 3 3/4 ” (8.7 lbs)
Input Power Factor
 ≥ 0.95
THD < 10%
Crest Factor Nominal Power <1.45
Ballast Loss 5-15 W
Operating Temperature (°C) -30/+40 °C
Internal Thermal Cutout 75 °C
 
 

Versatile ROMport™ Ballast Control Methods

Supported Protocol

Means

Daisy Chainable

Resistive Dimming

Potentiometer Control

No

Daylight Harvesting

Photo Sensor

Yes

Switching (Dry Contact)

Motion Sensor or Switch

Yes

0-10V DC Signal

Powered Device Control

Yes

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