Document Ref. EPD05183
(08.11.99)
ENGLISH
Part No. I380GB
issue 2
page 2
Load Types
Note 1)
Transformers for low-voltage halogen lamps must be approved for dimming use by the transformer manufacturer.
Note 2)
Helvar recommends lamp loading of the transformer to no more than 80% of the nominal transformer power, unless otherwise specified
by the transformer manufacturer. For example, a 500 VA transformer should not be loaded to more than 400W of lamp load. In
addition, the transformer has to endure short-circuit resistance or it must be equipped with a thermal protection on the primary side. The
thermal protection is to be of non-resettable type or manually resettable only.
Note 3)
The leakage current to the earth of the electronic ballast is about 0.5 mA. Due to harmonic currents, the leakage current can rise up to
5.0 mA/ballast when dimmed. This has to be taken into account in those installations where earth leakage circuit breakers are used. For
example, no more than six ballasts can be connected to one 30 mA fuse.
LOAD RATING OF HES99300
Min. per channel
Max. in total
Incandescent lamps or 230V halogen lamps
25 W
2300W
Low voltage halogen transformers
Notes 1) & 2)
50 VA
2300VA
Electronic transformers for low halogen lamps
Note 1)
Note 1)
Pre-heat transformers for 38 mm fluorescent tubes
(amount of tubes)
20W
1 pcs
44 pcs
40W
1
22
65W
1
14
Electronic ballasts for 26 mm fluorescent tubes Note 3)
(amount of ballasts)
EL 1x18FD
2
80
EL 1x36/2x18FD
2
46
EL 1x58FD
2
30
EL 2x36FD
2
23
EL 2x58FD
2
15
EL 1x70FD
2
23
EL 2x70FD
2
12
Electronic ballasts for TC-L-lamps
Note 3)
EL 1x18FD2F
2
80
EL 1x24FD2F
2
58
EL 1x36/2x18FD2F
2
46
EL 2x24FD2F
2
30
EL 2x36FD2F
2
22
