Q. Do you only make
metal halide lamps?
A. Venture Lighting
is a manufacturer of metal halide lamps, ballasts and controls
Q. Do the other
three lamp manufacturers make a pulse start lamp?
A. Yes, but not as many as Venture, nor as many types or different wattages
Q. What kind of
light bulb is this?
A. Please refer to
lamp description information
Q. Is there a warranty
on this light bulb?
A. All Venture lamps
are covered by a generous
Q. What is the rated
life of these lamps?
A. This information
can be found in Ventures Specification
Q. What do the letters
and numbers on my lamp mean?
A. Please refer to
Q. Can Venture supply
formulas for energy savings and energy pay-backs?
A. Calculate your
energy savings with our
Energy Saving worksheet (PDF file 64K).
Q. What are the benefits
of using Single Voltage Hybrid 277V ballasts over CWA ballasts?
A. Refer to benefts of Uni-Form® pulse start information.
Q. Does a pulse start
lamp require a socket with a certain voltage rating?
A. Yes. And this holds
true for both medium and mogul sockets. The pulse rating should be 4kv.
Q. Does the ballast
immediately begin to send current to the pulse start lamp after the power
is restored and how much?
A. There is no current
flow through the lamp until the lamp starts. When the lamp starts initially,
there is a higher current draw because the voltage in the arc tube is
low at first; the current draw increases until the lamp reaches its operating
voltage range. This information about (line input) open circuit can be
found in the Ballast
If there is a momentary
power outage, the lamps may be too hot to restart. This can possibly cause
a line circuit breaker to trip if there is not enough allowance for open
circuit current, especially if there has been a retrofit to the same wattage
controlled current pulse start reactor gear from the old pinch style CWA.
Neither CWA ballasts nor controlled current reactor ballasts should be
a problem, if the installation was planned right.. But controlled current
reactor ballasts draw approximately 125% more open circuit current than
a CWA ballast does. So, if you are retrofitting an installation with reactor
gear, be very careful that circuit load is considered and designed correctly.
Q. Is it possible
to add an ignitor to a standard CWA ballast to convert the system to pulse
A. Not really. Many
of the present metal halide ballasts in the marketplace have poor sustaining
voltage performance. If you add an ignitor, it does nothing to improve
sustaining voltage. All of the pulse start ballasts Venture has designed
have approximately 270 volts sustaining which is about 50 volts higher
than standard metal halide In all likelihood, the many lamps available
would probably start and operate properly for a while, but who knows how
long. Ventures pulse start ballast have a better current crest factor
and lower current off-time, which is much better for the lamp.
Q. Do you have any
literature comparing compact fluorescent systems to metal halide systems?
A. Yes, for some instances, metal halide is more
efficient, less energy and more light compared to fluorescent system. See our "Brighter Idea than Fluorescent" brochure (PDF file).
Q. How does the performance
of an electronic ballast compare to the other pulse start ballasts (CWA,
reactor, reg. lag)?
A. According to the
literature provided by Delta Power Supply (operating the 350 watt lamp),
the standard electronic ballast has a total watts loss of 12 when operating
the lamp at 340 watts. Current crest factor is 1.5 in the start phase
and 1.45 in the run phase. According to Delta Power Supply, the lamp can
be dimmed to 30%. However, Venture currently only guarantees a lamp to
This electronic ballast,
with additional features like dimming, is approximately 3 times more expensive
than other (magnetic) ballast types. Although Venture cannot verify any
claims about performance data, this ballast is currently being tested
for proper operation with Uni-Form® pulse start lamps.
Q. What is the maximum
distance you can remote the pulse start ballast, capacitor and ignitor
from the fixture?
A. If you look at
each individual ballast specification
sheet, you will notice an ignitor diagram. On the diagram, you will
notice the term BTL ( Ballast to Lamp) and a distance stated afterwards. Or visit our remote mounting page.
Q. Does remote mounting
of a pulse start ballast require any special type of wire?
A. This question must
have been generated as a result of the ignitor and the 3-4 kV pulse it
must deliver remotely to the lamp. A class wire should be used as it will
have the correct insulation properties necessary t prevent voltage leakage.
Q. Is there a standard
400 watt open fixture rated lamp?
A. Yes. Many manufacturers
rate a 400 watt lamp, in a base up only position, as an open fixture rated
lamp. But this does not mean that the arc tube could not violently rupture
and cause problems. It can, and it has caused damage and injury in he
past. Osram Sylvania has offered a 400 watt true open fixture rated lamp
for a number of years. They solved the problem by providing the lamp with
an extremely thick outer jacket (rather than a shroud) to contain a potential
arc tube rupture. The weight of the entire lamp and the cost is much higher
than a standard lamp as well.
Q. What is the hot
restart time difference between HPS and metal halide?
A. Although Venture
has never tested this, since both use an external ignitor, they should
be very close
Q. Since the halides
burn hotter in the pulse start arc tubes, does this increase the arc tube
temperature and outer jacket temperature compared to a standard metal
halide lamp? If yes, can we quantify with data? The real interest was
any temperature increases with regard to outer glass wall temperature.
A. The benefits of
the formed body design vs a standard pinched body is that it allows the
arc tube to attain the normal expected operating
temperature in much less time. Also there are fewer cold areas in
the formed body arc tube. The arc tube does not operate at a higher temperature
but the design allows the halides to remain much warmer because of the
reduction in cold areas. The formed body arc tube should not increase
the temperature of the outer jacket vs a standard pinched body arc tube
Q. Do we have cold
start and hot restart "actual times" for the various pulse start
lamps by wattage, including open and enclosed rated products?
A. Cold start times
should be immediate for all wattages due to ignitor starting. Hot restart
times will vary due to a wide range of contributing factors, including
lamp wattage, shrouded vs non-shrouded, and fixture design. We do not
have actual hot restart data by lamp type or wattage. The lamps hot restrike
60% faster than standard lamps.
Q. Is there a 480
volt ballast available for the Uni-Form pulse start system?
A. Yes, the low current
crest factor CWA plus ignitor is available in 480 volts.
Q. Can a standard
metal halide lamp be used in the Uni-Form pulse start system?
A. Yes, but all the
benefits of the pulse start lamp will be lost. This includes increased
longer life, improved color
warm-up and hot restrike and cold
starting. It may also be difficult to start. To see the benefits of Venture's Uni-Form systems click here
Q.What are the lumen
maintenance factors for the various Uni-Form pulse start ballasts?
A. The lumen maintenance
factors for the low current crest factor ballasts are:
CWA + Ignitor
+ Ignitor 83-84%
Q. To insure a Specifier
is specifying a Venture® pulse start system correctly, should
he include in the fixture schedule or spec book:
a) simply spell it out
in words (example Venture pulse start system with linear reactor ballast
and 350 watt lamp?)
- or -
b) use exact catalog numbers from the matrix or cut
sheets for each of the ballast, ignitor and lamp?
A. Use exact catalog
numbers. Otherwise it can become too vague and could be subject to arbitrary
change after it leaves the office of the specifier/engineer. Also, the
specifier/engineer should indicate that there are no substitutions without
his or her authorization.