AS/NZS 3832:1988  AUSTRALIAN STANDARDS LOAD CHART
TYPICAL COLD-CATHODE TUBE LOADING CHART
Iron-core Neon Transformers
Type ELECTRIC METRES  (See Note 1)
SECONARY VOLTAGE NEON ARGON MIX   (See note 3 )
tube diameter mm tube diameter mm
V 25 20 15 12 10 8 25 20 15 12 10 8
15000 31.2 25.6 19.8 16.3 13.8 11.4 35.7 32.0 27.7 24.8 22.6 20.2
12000 25.0 20.5 15.9 13.0 11.0 9.1 28.6 25.6 22.2 19.8 18.1 16.2
10000 20.8 17.1 13.2 10.9 9.2 7.6 23.8 21.3 18.5 16.5 15.1 13.5
9000 18.8 15.4 11.9 9.8 8.3 6.8 21.5 19.2 16.6 14.9 13.6 12.2
8000 16.7 13.7 10.6 8.7 7.4 6.1 19.1 17.1 14.8 13.2 12.1 10.8
7500 15.5 12.9 10.0 8.7 7.0 5.7 17.9 16.0 13.9 12.4 11.3 10.2
7000 14.6 12.0 9.3 7.6 6.5 5.3 16.7 14.9 12.9 11.6 10.6 9.5
6000 12.5 10.3 8.0 6.5 5.6 4.6 14.3 12.8 11.1 9.9 9.1 8.1
5000 10.4 8.6 6.6 5.5 4.6 3.8 11.9 10.7 9.3 8.3 7.6 6.8
4000 8.4 6.9 5.3 4.4 3.7 3.1 9.6 8.6 7.4 6.6 6.1 5.4
3000 6.3 5.2 4.0 3.3 2.8 2.3 7.2 6.4 5.6 5.0 4.6 4.1
2500 5.2 4.3 3.3 2.6 2.3 1.9 6.0 5.4 4.7 4.2 3.8 3.4
2000 4.2 3.5 2.7 2.2 1.9 1.6 4.8 4.3 3.7 3.3 3.1 2.7
1500 3.2 2.6 2.0 1.7 1.4 1.2 3.6 3.2 2.8 2.5 2.3 2.1
1000 2.1 1.8 1.4 1.1 1.0 0.8 2.4 2.2 1.9 1.7 1.6 1.4
Recommended gas pressure mm/Hg 6.0 7.5 10.0 12.5 15.0 18.5 5.0 6.5 8.5 10.5 12.5 16.0
NOTE: THIS CHART SHOULD BE USED AS A GUIDE ONLY.
1 The load length in electric metres is the length of cold-cathode tubing plus 0.5m for each pair of electrodes, e.g. if a sign is composed of four letters, each letter comprising one linear metre of tubing and one pair of electrodes then the total load in electric metres = 0.5 4 electrode pairs = 6 electric m.
2 For exposed and extremely cold areas, reduce the length by 20%.
3 Argon mix = 75% argon and 25% neon.
To ensure maximum reliability, transformers must be correctly calibrated to the manufacturers specifications before and after installation.
Electronic Neon Transformers Maximum Load Length Chart
Type ELECTRIC METRES  (See Notes )
SECONARY VOLTAGE NEON / CLEAR MERCURY / ARGON MIX
tube diameter mm tube diameter mm
V 20 15 12 10 9 8 20 15 12 10 9 8
12000 18.6 13.7 10.6 7.6 6.4 5.5 20.4 16.7 12.8 9.1 7.6 6.4
10000 16.7 12.2 9.1 6.4 5.5 4.9 18.9 14.3 10.3 7.9 6.1 5.5
7500 11.9 9.1 7.0 5.2 4.3 3.7 13.7 11.0 8.2 6.1 4.9 4.3
Recommended gas pressure mm/Hg 7.5 9.0 11.0 13.0 15.0 17.0 7.5 9.0 11.0 13.0 15.0 17.0
Note: for each pair of Electrodes used deduct 300mm of tube length from the above chart.
Do not exceed maximum tube length prescribed in the “Maximum Load Length” metre chart.
Maximum lend\gth in metres may vary according to HV wire leads length and enviroment. Metreage for mercury filled tubes are based on operation in temperatures above 4’C (40’F). Deduct 25% of tube metre for operation below 4’C (40’F).
 Installation
1. can be installed on either a metallic or non-metallic surface, free airflow should be ensured to provide adequate ventilation.
2. The overall length of the GTO leads should be under 2m, and always keep a minimum of 25mm between each wire and any metallic surface.
3. When using more than one power supply to illuminate a sign, keep at least 75mm between power supplies, never cross HV leads or cross HV leads with supply leads.  It is perferable to make the HV output wire leads as short end as equal in length as possible.
4. Installation shall be in conformity with local codes.
SIET Transformers rated IP44
30 mA (short circuit)
STOCK Type Sec. Voltage Weight Dimensions
CODE V kg LxWxH mm
T2/25S SIET 2000 3.35 255  84  80
T3/25S SIET 3000 3.35 255  84  80
T4/25S SIET 4000 3.35 255  84  80
T5/25S SIET 5000 4.23 255  84  89
T6/25S SIET 6000 4.23 255  84  89
T7.5/25S SIET 7500 5.24 255 84 100
T9/25S SIET 9000 5.24 255 84 100
T10/25S SIET 10000 7.45 295 113 100
T12/25S SIET 12000 7.45 295 113 100
T15/25S SIET 15000 9.37 295 113 113
60 mA (short circuit)
STOCK Type Sec. Voltage Weight Dimensions
CODE V kg LxWxH mm
T6/60S SIET 6000 7.45 295 113 100
T10/60S SIET 10000 9.37 295 113 113
T12/60S SIET 12000 9.37 310 125 140
T15/60S SIET 15000 12.95 310 125 140
STANDARD ELECTRIC WORKS Transformers
30 mA (short circuit)
STOCK Type Sec. Voltage Weight Dimensions
CODE V kg LxWxH mm
T3000 STANDARD 3000 3.5 266 83 76
T4000 STANDARD 4000 4 266 83 76
T5000 STANDARD 5000 4.5 266 83 76
T6000 STANDARD 6000 5 278 91 83
T7500 STANDARD 7500 5 278 91 83
T9000 STANDARD 9000 6 291 103 89
T10000 STANDARD 10000 7 291 103 89
T12000 STANDARD 12000 9 291 103 120
T12000E ENCLOSED IP23 12000
T15000 15000 15000 12 311 103 140
T15000E ENCLOSED IP23 15000
60 mA (short circuit)
STOCK Type Sec. Voltage Weight Dimensions
CODE V kg LxWxH mm
T5000/60 60mA 5000 216 103 89
T10000/60 60mA 10000 13 235 116 140
T12000/60 60mA 12000 19 254 130 163
T15000/60 60mA 15000 19.5 254 130 163
Window Type
STOCK Type Sec. Voltage Weight Dimensions
CODE V kg LxWxH mm
T5000/W 5000 228 78 86
T7500/W 7500
T9000/W 9000 255 91 105