Single phase pole mounted transformer electrical 25Kva ANSI IEEE
Standard 12.47KV
The transformer is cylinder sealing structure. Each one is fixed
with grounding devices, hooks, sup porting lugs and one or two high
voltage bushing on the cover, low voltage bushing on the wall of
the tank and eyebolt,connecting terminals. The tap changer should
be adjusted basing on the instruction after the power off.
Standard Feature
1. High voltage bushing
The main material of high voltage bushing is porcelain and its main
role is to connect high voltage winding and external high voltage
lines, insulation protection, protection against external
intrusion, heat conduction and heat dissipation, etc., to ensure
the normal operation and safety of the transformer.
2. Low voltage bushing
There are two types of low voltage bushing as spade type and clip
type.
3. Oil fill valve
The role of the oil filling valve on the single phase pole mounted
transformer is to fill the insulation oil into the tank.
4. Oil drain valve with sampler
The oil drain valve and sampler on the single phase pole mounted
transformer are used to discharge air and moisture, remove sediment
and impurities, ensure the quality and performance of the oil
inside the transformer, and ensure the safe and stable operation of
the transformer. Meanwhile, we can collect oil samples for analysis
and testing.
5. Pressure relief valve
The pressure relief valve on the single phase pole mounted
transformer is mainly used to protect the safe operation of the
transformer, maintain normal working conditions, and adjust the gas
pressure inside the transformer to ensure its stability and
reliability.
6. Lighting arrester
The lighting arrester keeps the transformer safe from power surges
caused by lightning, switching, and other HV sources. It shunts
high voltage surges by grounding to avoid the direct impact of the
transformer itself.
7. Internal current limiting fusing
The fuse is used to limit the transformer winding from being
damaged when there are overload currents.
8. Circuit breaker
One secondary circuit breaker is above the winding inside the tank
and here are the operating handle, overload reset, and signal
light. It has the function of thermal protection, low oil lever
protection, and allowing a percentage of power to go through the
breaker to restore service when it trips.
Main data
| ITEM | UNIT | SPECIFICATION |
| Type | ~ | POLE MOUNTED |
| Rated capacity | kVA | 25 |
| No. of Phase | ~ | Single Phase |
| Primary voltage | V | 7200/12470Y |
| Secondary voltage | V | 240/120 |
| Vector group | ~ | Ii0 |
| Tapping type | ~ | off circuit tapping |
| Tapping range | % | ±2*2.5% (5taps) |
| Cooling method | ~ | ONAN |
| Rated frequency | Hz | 60 |
| Insulation class | ~ | A |
| Temperature rise | K | 65 |
| Off-load loss | W | 80 |
| On-load loss (75℃) | W | 410 |
| Impedance | % | 2 |
| Winding material | ~ | copper |
| Core material | ~ | silicon steel |
| Insulation Fluids | ~ | Mineral oil |
| Housing material | ~ | coated steel |
| Service condition | ~ | outdoor |
| Sea level | m | ANSI |
| Standard | ~ | ≤1000 |
Specifications
| 10kva-500kva Single-phase oil immersed transformer |
| Rated Cap acity(kVA) | High | Low Voltage(v) | Connection Symbol | Standard | Short-circuit impedance(%) | Efficiency |
| Voltage(v) | (%) |
| 10 | 4160
7200
12000
12470
13200
13800
19920
24940
34500 | 110
220
230
400
480 | II0,II6 | IEEE/ANSI/ DOE | 1.8-4% | 98.7 |
| 15 | 98.82 |
| 25 | 98.95 |
| 37.5 | 99.05 |
| 50 | 99.11 |
| 75 | 99.19 |
| 100 | 99.25 |
| 167 | 99.33 |
| 250 | 99.39 |
| 333 | 99.43 |
| 500 | 99.49 |
Accessories
Production process
FAQ
1. Q: Can I have a sample order?
A: Yes, we welcome sample order to test and check quality.
2. Q: What is the lead time?
A: Mass production time 15-25 days.
3. Q: How long is the warranty?
A: 24 monthes from B/L. If there are any accessory problems,just
provide the photos of damaged accessory,then we will provide free
service. According to the number of products,we will provide easily
damaged accessories for free. we also can provide technical support
if you need.
4. Q: Is OEM/ODM available?
A: Yes,it is! We are manufacturer with our own R&D team, we can
customize products according to customer's drawing or requirements.
Customized services:
a. Customized color and special function.
b. Customized box.
c. Print customer's logo.
d. Your other ideas about product, we can help you design and put
them into production. The above customized services must be
confirmed before production.
5. Q: How to control the products quality?
A: Our company owns the core technology ,all kinds of products hold
CE certificate. We have professional engineers. Workers are
strictly required to make products according to the drawings. Each
process has technical instructors.The QC supervisors will regularly
inspect the production. We will do products performance tests
during production, and comprehensive quality tests when the
products is completed.
