Description
The on-load tap changer (OLTC) transformer is equipped with a mechanism allowing adjustments to the turns ratio while operational. Key points about OLTC transformers include:
- Tap Changer Functionality: Enables adjustments to the turns ratio for voltage regulation, especially beneficial for varying incoming voltage or load-side voltage adjustments.
- On-Load Adjustment: Unlike off-load tap changers, OLTCs can adjust taps during operation, adapting to changing loads without interrupting power.
- Continuous Voltage Regulation: On-load adjustments allow continuous regulation, ensuring output voltage stays within specified limits during power supply.
- Applications: Commonly used where incoming voltage fluctuates or precise voltage control is needed, such as in distribution networks, industrial facilities, and varying load conditions.
- Control System: The on-load tap changer is controlled manually, automatically, or remotely based on the power system's design and requirements.
1、Performance: Oil immersed power transformers adopt full oil filled and sealed corrugated oil tank，which have good moisture resistance and heat dissipation performance.
2、Usage:Oil immersed distribution transformers can be installed indoors and outdoors, and are widely used in industrial and mining enterprises, such as industrial park， engineering construction ，thermal power plants, hydropower stations etc..
3、Rated voltage: The input voltage is 6KV, 10KV, 11KV, 13.8KV etc.. The output voltage is 400V 415V 420V 440V etc..
4、Rated capacity:25kVA 50kVA 80kVA 100kVA 125kVA 160kVA 200kVA 250kVA 315kVA 400kVA 500kVA 630kVA 800kVA 1000kVA 1250kVA 1600kVA 2000kVA 2000kVA 2500kVA 3150kVA 4000kVA etc..
5、Customization: medium voltage transformer or high voltage transformercan be manufactured according to the requirement of client.
Certification&Standards
1、Certification: ISO9001、CE、UL、CB、KEMA
2、Standards:
IEC60076- Part 1；Part 2；Part 3；Part 5；Part 10 Power transformers；
GB/T1094- Part 1；Part 2；Part 3；Part 5；Part 10 Power transformers；
- GB/T 15164 Oil-immersed power transformer load guide
- GB/T 6451 Three-phase oil-immersed power transformer technical parameters and requirements
Model Meaning
Product details 
Product characteristics
Type | Rated capacity （KVA） | Connection symbol | Voltage combination （KV） | No-load losses（W） | Load losses（W） | No- load current （%） | Short-circuit impedance （%） | ||
H.V | Tapping range | L.V | |||||||
S11 | 30kVA | Yyn0 or | 6 6.3 10 10.5 11 | ±5% or ±2×2.5% | 0.4 0.415 0.42 0.44 ect | 100 | 600 | 2.3 | 4.0 |
S11 | 50kVA | 130 | 870 | 2.0 | |||||
S11 | 63kVA | 150 | 1040 | 1.9 | |||||
S11 | 80kVA | 180 | 1250 | 1.9 | |||||
S11 | 100kVA | 200 | 1500 | 1.8 | |||||
S11 | 125kVA | 240 | 1800 | 1.7 | |||||
S11 | 160kVA | 280 | 2200 | 1.6 | |||||
S11 | 200kVA | 340 | 2600 | 1.5 | |||||
S11 | 250kVA | 400 | 3050 | 1.4 | |||||
S11 | 315kVA | 480 | 3650 | 1.4 | |||||
S11 | 400kVA | 570 | 4300 | 1.3 | |||||
S11 | 500kVA | 680 | 5100 | 1.2 | |||||
S11 | 630kVA | 810 | 6200 | 1.1 | 4.5 | ||||
S11 | 800kVA | 980 | 7500 | 1.0 | |||||
S11 | 1000kVA | 1150 | 10300 | 1.0 | |||||
S11 | 1250kVA | 1360 | 12800 | 0.9 | |||||
S11 | 1600kVA | 1640 | 14500 | 0.8 | |||||
S11 | 2000kVA | 2280 | 17820 | 0.6 | 5.0 | ||||
S11 | 2500kVA | 2700 | 20700 | 0.6 | |||||
Workshop inventory
Payment and transportation
Transformer ordering instructions
- Main parameters of transformer （voltage, capacity, loss and other main parameters）
- Transformer use environment （altitude, temperature, humidity, location, indoor，outdooretc.）
- Other customized requirements （tap switch, color, oil pillow, etc.）
- Minimum order quantity: 1 set, global delivery within 7 days
- The normal delivery period is 30 days, fast delivery worldwide
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