gas filled
mining
transformer
In the hazardous environment of underground coal mines,
Ampcontrol’s Gas Filled Mining Transformer is a safer
alternative to traditional air insulated transformers.
In comparison to traditional air filled units that rely on the
design of the flange to contain any explosion, Ampcontrol’s
transformer utilises non-explosive nitrogen gas to suppress
arc explosions and significantly reduce the chance of fire
underground.
Game changing technologies.
ampcontrolgroup.com/gastransformer
The tank is hermetically sealed and positively pressurised
to prevent moisture ingress, giving the unit a much longer
operational life. Even when cooled or off-load, moisture
ingress is nil.
The transformer package incorporates primary and
secondary protection ends and is manouvered on a low
profile trailer or skid base, all designed and manufactured to
customer specifications.
applications
The transformer is ideal for use in underground coal mines
where SANS 60076:15 certification is required due to
hazardous atmosphere. The unit also has positive safety
implications for the mineral and metal mining industry.
The unit powers continuous miners, conveyors, shuttle cars
and any electrical equipment.
improved safety
The transformer has increased safety benefits over
traditional air filled models. By utilising inert gas nitrogen,
arc explosions are suppressed and reliance on the flange
design to quell the explosion is reduced.
For personnel working in hazardous environments, this
means dramatically reduced chances of fire hazard.
reduced maintenance
Service required to maintain the unit is minimal. With
moisture ingress eliminated, the life of the transformer is
extended and monitoring of the internal gas pressure is the
only requirement.
COMPACT DESIGN
Supplied on a wheeled trailer or skid base, the transformer
is designed to be lighter, with a lower profile and smaller
footprint than air cooled units.
Ampcontrol Africa
375 Bergvlei Road, Shop 9 Ackrupta Park
Wadeville Ext 5 Gauteng Province
Telephone: +27 11 902 9297
Email: sasales@ampcontrolgroup.co.za
specifications
Ratings
Voltage ratio
250kVA - 7MVA
HV 11,000V/6,600V
LV 415V/1,100V/3,300V
Cooling medium Nitrogen
Temperature rise Winding 150°C
Enclosure 100°C
Tapping range
Frequency
Certification
+5 to -5%
50Hz
SANS 60076:15
features & benefits
Features
Inert nitrogen gas
insulation
Compact design
Benefits
Reduced risk of explosions,
increased personnel safety
Light, low profile unit with
manoeuvrable trailer or skid base
Hermetically
Longer service life through
sealed, positively elimination of dust and moisture
pressurised tank
ingress
No serviceable
Increased production through
parts
reduced maintenance and
operational downtime
In house designed Easy tap switch adjustment with
tap switch
externally accessed switch