| Muhimmiya | Vziman |
| Model NO. | 75 kVA Single Phase Pole Mounted Transformer Akwụkwọ ịkụmara ejiri ụzọ ọ bụla nke 75 kVA na-enye isi obere |
| Rated Voltage | 11kV |
| Kpọmkwem kwamnyereke | 75kVA |
| Siri | Single Phase Pole Mounted Transformer |
Ga-akwado na mba:
WONE ni onye eji eme ihe dịka transformer site na ụwa na ọtụtụ oge ọdịnala n'oge 10.
Transformer ndị single-phase Pole-Mounted na-ekwu na-enwe maka ha bụrụkwa na-eji maka ụgbọalu nkasi elekiri n'obodo ma ọ bụ n'ime ụlọ.
Akara nkasi: 11kv, 12.4kv, 13.2kv, 13.8kv na 34.5kv; Akara nkasi: 240 / 480v, 120 / 240V, etc.
Nkọwa Standard: IEEE C57, ANSI C57, IEC60076 .
Nke a ga-akwado teknụzụ:
Nke a na-akwado teknụzụ winding dị elu ka ọ ghọta ikpeazụ lightning.
Magnetic leakage nke ọsọ, ọnụ gwụnye nke ọhụrụ, ọnụ gwụnye nke ọhụrụ maka short circuit.
Iron core 45° full oblique joint step laminated structure .
Okpuru:
Mitsubishi laser cutting machine na CNC punching, reducing, folding na ọtụtụ ụdị equipment maka ịkwado isi ọgụgụ.
ABB robot automatic welding, laser detection, maka ịghọta ikpeazụ, qualified rate of 99.99998%.
Electrostatic spray treatment, 50 years of paint (coating corrosion resistance within 100h, hardness ≥0.4).
Cylindrical fully sealed construction with self-sealing manual pressure relief valve (according to ANSI specification).
Standard NEMA hanger bracket (each device includes pole support bracket plate).
Fully sealed structure, maintenance-free, normal operation life of more than 30 years.
Iron core:
Material nke iron core bụ high quality cold rolled grain oriented silicon steel sheet with mineral oxide insulation (from Baowu Steel Group China).
Minimize loss level, no-load current and noise by controlling the cutting and stacking process of silicon steel sheet.
Winding:
Low voltage windings are made of high quality cable paper wrapped wire.
High voltage windings are made of high quality polyurethane enamelled round copper wire.
Interlayer insulation using dot adhesive paper, so that the coil bonding into a fixed unit, with excellent insulation resistance.
Transformer structure is reliable during normal operation and transportation.
High quality material:
Baowu Steel Group production of silicon steel sheet.
High quality anaerobic copper from China.
CNPC (Kunlun Petroleum) High quality transformer oil (25#).
Other:
High strength polymer low pressure casing or high and low pressure porcelain casing.
Equipped with ring type full copper tinned terminal.
Install limited current fuses and arresters.
Ordering instructions:
Main parameters of transformer (voltage, capacity, loss and other main parameters) .
Transformer use environment (altitude, temperature, humidity, place, etc) .
Other customized requirements (tap switch, color, oil pillow, etc) .
The minimum order quantity is 1 set, global delivery within 7 days .
The normal delivery period is 30 days, with fast delivery worldwide .
How does the oil-immersed transformer work as a fire protection device?
Protection Devices：
Gas Relay：
When a fault occurs inside the transformer, such as local overheating, electric arc discharge, etc., the insulating oil will decompose and produce gas. The gas relay is installed in the connecting pipeline between the oil tank and the conservator of the oil - immersed transformer.
Once a certain amount of gas is detected, the gas relay will act. It can take different measures according to the severity of the fault. For example, when the light - gas action occurs, an alarm signal will be sent to remind the operation personnel to check; when the heavy - gas action occurs, the power supply of the transformer will be directly cut off to prevent the fault from further expanding and causing a fire.
Fire Isolation Measures：
In the installation environment of the transformer, fire isolation facilities are usually set up. For example, in a substation, an oil - immersed transformer may be installed in an independent fire - proof compartment.
The fire - proof compartment is constructed with fire - resistant materials, such as fire - bricks, fire - proof coatings, etc. These materials can prevent the spread of fire for a certain period of time (such as 1 - 2 hours, depending on the material properties), buying time for firefighters to come and put out the fire.
In addition, fire - proof dikes may be set up around the transformer to prevent the large - area fire caused by the outflow of insulating oil after the rupture of the transformer's oil tank. The fire - proof dikes can limit the leaked oil within a certain range.
