Precision voltage stabilization three-phase dry isolation
transformer
Use occasion
Widely used in subways, high-rise buildings, airports, stations,
wharfs, industrial and mining enterprises and tunnels for power
transmission and distribution and the use of imported equipment,
etc.
Overview
Products comply with VDE0550, IEC439, JB5555, GB5226*, national
standards. The SG series three-phase dry-type transformer not only
has the function of voltage transformation in the power grid, but
also isolates the third harmonic of the power grid to the
equipment, protecting the heat generated by the machine and
reducing the life of the insulating material. Particularly suitable
for imported equipment (380V in→220V out, 380V in→any voltage
output, 220V in→any voltage output) specifications between
1KVA～1000KVA, SG, DG series dry-type isolation transformers are
widely used in AC 50～60HZ, input , Various three-phase power supply
occasions where the output voltage does not exceed 500V. It is
widely used in various power supply occasions with AC 50, 60HZ and
input and output voltages not exceeding 500V. The various inputs,
outputs, voltage levels, connection groups, adjustment of tap
positions, winding capacity distribution, secondary windings,
whether to require a casing, etc., are all carefully designed and
manufactured according to user requirements.
Two points should be paid attention to when using isolation
transformer
1. Both ends of the secondary of the transformer cannot be
grounded.
2. The human body cannot touch both ends of the secondary at the
same time, otherwise there is a danger of electric shock.
Product parameters
Capacity: 1KVA-3000KVA (customized according to user needs)
Input voltage rated voltage (customized according to user
requirements)
Output voltage Rated voltage (customized according to user
requirements)
Output voltage accuracy ±1%
Work efficiency ≥98%
Waveform distortion No additional waveform distortion
Work protection With over-current protection; can work unattended
for a long time
Executive standard Products conform to VDE0550, IEC439, JB5555,
GB226, etc.* national standards
Insulation resistance ≥150M
Insulation grade F grade, H grade, HC grade are available
(conventional grade F)
Connection method Y/Y, Y/△, △/Y, △/△ any combination
Electric strength: power frequency sinusoidal voltage 3000v for 1
minute without breakdown or flicker
Overload protection Double rated current can be maintained for 1
minute
Frequency 50Hz/60Hz
Cooling method Self-cooling
Cooling type dry
Core type Core type
Moisture-proof method: open
Ambient temperature —15℃+40℃
Altitude ＜1000m
Relative humidity ＜90%
Note
There is no gas vapor, chemical deposits, dust, dirt and other
explosive and corrosive media that seriously affect the insulation
of the transformer at the installation site.
