ZGS series American prefabricated substation box type Distribution
station
Applications
Step-up substation is designed as box type and specially for new
energy generation industry, which can adjust the low voltage from
inverter station to high voltage and then run in power grid. So a
box-type inverter station and a step-up station can be integrated
into one power generation station. It’s widely applied in Solar
Energy Power Plant, Wind Energy Power Plant and Nuclear Power
Plant, etc.
WHY VERELEN
1. One of the drafters of the National Standard Mine Flameproof Mobile Substations (GB/T 8286-xxxx ), which will replace the existing national standard (GB/T 8286-2005
) and it was submitted for trial in Beijing.
2. +20 years experience R&D team, derived from a 60 years of history
transformer manufacturer in Changsha, Hunan, China since 1956.
3. Full range of transformer types with customized functions are available.
4. CE & ISO certificated.
Tests
Below are the tests conducted by Varelen before delivery. Other
tests required by clients can also be done accordingly.
Insulation resistance
Resistance of all windings
Check voltage ratio and vector group
No-load test at rated frequency and rated voltage
Impedance test
Withstand voltage test
Induced over-voltage withstand test
Partial discharge measurement
Product Features
1. Intelligient control, integrated with enclosure, compact
structure and high environmental adaptability for outdoor
applications.
2. The three-limb iron core is made of oblique cut Grain-oriented,
seven-step silicon steel laminations insulated on both sides,
guaranteeing low losses and low noise. These values are even
improved by laser treatment. It is protected on the surface with a
flash-proof varnish in order to prevent the sheet from corrosion
and to reduce the noise.
3. Clamping frame: it is processed by CNC cutting, bending and then
one-time punch forming, the hole’s size is accurate and the
appearance looks delicate.
4. The winding coil is made of oxygen-free copper, class H for main
insulation materials and coil is insulated by NOMEX paper of DUPONT
brand, LV winding is isolated by copper foils. All these make the
heat-resistant is up to 220℃, with excellent overload capacity and
low loss, but high efficiency.
5. Varelen practices strictly exclusive casting system of F(155℃)
or H(180℃), and the epoxy resin is injected and casted in the
vacuum machine, so it’s highly insulated, dust-proof and
moisture-proof, which ensures stable and reliable performance
| Technical parameters |
| Rated voltage | 10/0.4kv(HV/LV) |
| Maximum working voltage | 12(HV) |
| Rated frequency | 50Hz |
| Rated capacity | 50-1600kVA |
| Withstand voltage(1 min working) | 35kV |
| Lightning impulse voltage | 75kV |
| Cooling method | oil immersion self-cooling |
| High voltage | 50kA |
| backup fuse switching on current |
| on-off current of the plug fuse | 2.5 |
| environment temperature | -35℃ to 40℃ |
| Coil temperature | 62 ℃ |
| No load voltage | ±5% ±2x2.5% |
| Noise level | 50db |
| Protection level | IP43 |
Our company can produce a variety of oil-immersed transformers with
a voltage rating of 35kV or less and
a capacity of 12500kVA or less. The variety includes S9, S11 series
and S13, S15 series of energy-saving
products. The product is widely used in industrial and mining
enterprises, agriculture, civil construction and
other distribution sites as well as oil, chemical industry, more
oil, more chemical substances in the places.
Executive Standard:
GB1094 Electrical Transformer
IEC60076 Electrical Transformer
JB/T6451 Specification and Technical Requirements for Oil-immersed
Power Transformers
JB/T10088 6kV~500kV Power Transformer Sound Level
GB/T7595 Quality of Transformer Oils in Service
Manager Jack Whatsapp :+8618563957953
Manager Datang Whatsapp: +8613589262999
