315 OFTC Transformer
The 315 OFTC Transformer from AJ Electronics delivers reliable, efficient power with Oil
Forced, Air Forced (OFAF) cooling for superior thermal performance and reduced losses. Its
robust design ensures long life and stable voltage in demanding industrial environments.
Our 315 OFTC Transformer meets international standards, offering superior insulation, high
overload capacity, and low maintenance. Trusted by industries and utilities, it ensures
safe, durable, and cost-effective performance.
| Capacity in kVA |
315 KVA |
| Winding Material |
Electrolytic Copper
|
| Efficiency Level |
Level 1 |
| Losses at 50% Load
|
1025 WATT |
| Losses at 100% Load
|
3100 WATT |
| No. of Phases |
3 Phase |
| HV Voltage |
11,000V |
| LV Voltage |
415V |
| Cooling |
ONAN (Oil Natural Air
Natural) |
| Reference Standards
|
IS:1180Part1(2014)
|
| Frequency |
50HZ |
| Vector Group |
DYn 11 |
| Method of Connection :
HV/LV |
Delta/Star |
| Tapping |
OFF LoadType(OLTC)
|
| Tap Changer Range |
+7.5%to-7.5% |
|
Steps/Positions/StepRange
|
6Steps/7Positions/2.5%
|
| Make of Conductor |
Hindalco Birla make
|
| Type of HVConductor
|
DPC Insulated Round
Wire
|
| Type of LVConductor
|
DPC Insulated
Rectangular
Strip |
| Cooling |
ONAN |
| Max .Ambient
temperature
|
50ºC |
| Temperature Rise Oil
|
40ºC |
| Temperature Rise
Winding
|
45ºC |
| Brand of Kraft Paper
used
|
ITC |
| Transformer Oil
Specification |
AsperIS:335-1983 |
| Transformer OilMake
|
Savita/Apar/divyol/gandhar(DirectlyImported) |
| Core Type |
CRGO(0.23/0.27mm)LaserGrade |
| Make of Core CRGO |
POSCO/Thyssen/NLMK
|
| Impedance |
4.5 % (TOL 10%) |
| Stationing Type |
Indoor/Outdoor |
| Class of Insulation
|
ClassA |
| Power
Frequency/Lighting
Impulse |
28kV/95kV |
| Paint Outdoor/Indoor
|
PUPaint/HORPaint |
In addition, AJ Electronics emphasizes strict testing and quality control at every stage
of production to ensure that each 315 OFTC Transformer delivers consistent results in
real-world applications. Whether it’s for heavy industrial operations, power
distribution systems, or infrastructure projects, this transformer is engineered to
minimize downtime and maximize energy efficiency. By combining advanced design with
robust materials, AJ Electronics provides customers with a solution that not only meets
today’s power challenges but also supports long-term reliability and sustainability.
| Capacity in kVA |
315 KVA |
| Rating & Diagramplate
|
INCLUDED |
| Earthing terminals
|
INCLUDED |
| Pre-filled Silica-gel
breather |
INCLUDED |
| Lifting lugs for
complete
transformer |
INCLUDED |
| Thermometer pocket
|
INCLUDED |
| Neutral bushing for
earthing |
INCLUDED |
| Oil Temperature
Thermometer |
INCLUDED |
| Oil level indicator on
the
Oil Conservator |
INCLUDED |
| Drain cumsampling
valve
|
INCLUDED |
| Filter Valve with plug
|
INCLUDED |
| Pressure relief
explosion
vent with diaphragm |
INCLUDED |
| LV Cable
Box(IP55rated)
|
INCLUDED |
| HV Cable Box (IP 55
rated)
|
INCLUDED |
| Brass LV Lugs
Connectors
|
INCLUDED |
| Oil Temp.
Indicator(OTI)with Alarm &Trip Contacts |
INCLUDED |
| Oil Temp.
Indicator(OTI)with Alarm &Trip Contacts |
INCLUDED |
| Winding Temp.
Indicator(WTI) with Alarm& Trip Contacts |
INCLUDED |
| Bucholz Relay with
Alarm&Trip Contacts |
INCLUDED |
| Marshalling Box with
complete internal wiring |
INCLUDED |
| OFF LoadTap
Changer(OFTC)
|
INCLUDED |
| Oil Surge Relay with
Alarm
&Trip Contacts |
INCLUDED |
| Magnetic Oil Level
Guage
(MOG) with Alarm&TripContacts |
INCLUDED |
|
Uni-directional/Bi-directional Wheels |
OPTIONAL |
| Inspection Cover |
INCLUDED |
Measurement of Winding Resistance
Measure of Voltage Ratio and Vector Group
Short Circuit Test for Measurement of
Impedance and Load Loss
Measurement of No-Load Loss
Measurement/Calculation of Total Losses at 50%
Load
Measurement/Calculation of Total Losses at
100% Load
Measurement of Insulation Resistance
Induced Over Voltage Withstand Test (DV/DF
Test)
Separate Source Voltage Withstand Test
Pressure Test
Oil Leakage Test
Physical Examination
