11kv Sz11 Type on-Load Tap Changing Distribution Transformer
11kv Sz11 Type on-Load Tap Changing Distribution Transformer image
Get Latest Price Request a quote
Quick Details
Product Details
1. The features of the product structure are:
Core of transformer are made by the high quality cold-rolled grain-oriented silicon steel sheet with laser notch, cutting by the
imported world first class cut-into-length production line to ensure less shear burrs, high precision lamination, also inclined by
45° full-seam construction, making the silicon steel sheet rolling direction same as the magnetic flux direction, it can reducing
the load loss, load current and noise level.
1.2 HV winding is made with polyvinyl acetal wire enamel wire, layer type, double-sided glue dots paper are used as the layer
insulation between layers, it will stick together after dry, so that the HV winding to solidify to a solid after dry. HV winding
ampere-turns arranged by our specific technology, it will reduce axial strength during short circuit happen.
1.3 Corrugated tank structure used in the transformer design. The imported corrugated tank production line can produce the
corrugated sheet and welding seam automatically, the weld the tank rim and bottom on the welding desk, it will be
performed the leakage test after welding process finished one tank by one tank, and a finally leakage test for whole
transformer to ensure the quality of sealing.
1.4 The oil will be filling in the transformer under vacuum condition, strictly and advanced technology greatly improved the
insulation strength of transformer.
1.5 Lastest invention technology are used on designing of transformer bushing, no pressure pin and plate on the outside, it
avoids oil leakage, steel rust and etc, the structure is reasonable and contour artistic.
1.6 Oil level gauge with magnetic plate structure, it can fully isolation the oil tank and air, can ensure the quality of
transformer oil not to effect by ultraviolet radiation.
1.7 Bar-type No Circuit Tap Changer used on the transformer design, it is easy to be operated. It can be automatically and
quickly switched, and have obviously feeling during switched by hand. Effectively solve the problems of switch as other
tap-changer. Client can also add a lock to prevent the non-normal random switching according their requirement.
2. Dyn11:
The comparison of the Dyn11 and Yyn0 vector group:Both Dyn11 and Yyn0 vector group distribution transformers are
three-phase three-column type, only the insulation requirements of high-voltage winding of Dyn11 transformer, insulation
strength slightly higher than Yyn0, others are all similar. However, still big difference between those two types of transformers.
2.1 Three-column core transformer, the third harmonic flux only can circulate through the tank wall and other parts. Thus,
walls and other components will be heated cause by the stray loss. Dyn11 will much better than Yyn0 in this issue.
2.2 Zero sequence impedance of Dyn11 is much smaller than Yyn0, it is conducive to shut off load in LV side when fault
grounding happened.
2.3 Dyn11 transformer can be running even the neutral current is equal or more than 75% of phase current. Therefore, the
ability to withstand unbalanced load, Dyn11 is greater than Yyn0.
2.4 When one phase fuses in HV side of Dyn11 transformer, the other two-phase load can still run, but Yyn0 can not. So
Dyn11 vector group, the neutral potential displacement of LV side will not be affected by the unbalanced load.
2.5 Whether single-phase short circuit in LV side, or three-phase short circuit, the current is no change with the neutral
grounding type of Dyn11 transformer.
2.6 Single-phase short circuit current of Dyn11 transformer is approximately equal to three-phase short-circuits current,
which is beneficial to fuses choosing. Zero sequence impedance of Yyn0 transformer is greater than the positive and
negative sequence impedance, so the single-phase short-circuit current is less than three-phase short-circuit current, it
will take some difficult in fuses choosing.
Technical Specification
Type | Rated capacity | Rated Voltage (KV) | Connecting Symbol | No-load Loss (KW) | Load Loss (KW) | No-load Current (%) | Short-circuit Impedance % | ||
H.V (KV) | Tapping Range of M.V | L.V (KV) | |||||||
SZ11-200/10 | 200 | 6 6.3 10 10.5 11 |
±4*2.5% | 0.4 | Dyn11 | 0.38 | 1.96 | 1.5 | 4 |
SZ11-250/10 | 250 | 0.45 | 2.47 | 1.4 | |||||
SZ11-315/10 | 315 | 0.54 | 4.10 | 1.4 | |||||
SZ11-400/10 | 400 | 0.64 | 4.96 | 1.3 | |||||
SZ11-500/10 | 500 | 0.77 | 5.90 | 1.2 | |||||
SZ11-630/10 | 630 | 0.96 | 7.27 | 1.1 | 4.5 | ||||
SZ11-800/10 | 800 | 1.12 | 8.89 | 1.0 | |||||
SZ11-1000/10 | 1000 | 1.36 | 10.43 | 1.0 | |||||
SZ11-1250/10 | 1250 | 1.56 | 12.40 | 0.9 | |||||
SZ11-1600/10 | 1600 | 1.92 | 14.79 | 0.8 |
Type | Rated Capacity | Weigt (KG) | Overall Dimension (MM) | Track Spacing (MM) |
|||
Oil | Total | L | M | H | |||
SZ11-200/10 | 200 | 250 | 1140 | 1700 | 850 | 1520 | 550*550 |
SZ11-250/10 | 250 | 280 | 1280 | 1740 | 880 | 1560 | 550*550 |
SZ11-315/10 | 315 | 310 | 1450 | 1780 | 920 | 1600 | 660*660 |
SZ11-400/10 | 400 | 340 | 1650 | 1810 | 960 | 1650 | 660*660 |
SZ11-500/10 | 500 | 390 | 2010 | 1910 | 1100 | 1800 | 660*660 |
SZ11-630/10 | 630 | 620 | 2940 | 2190 | 1140 | 2050 | 820*820 |
SZ11-800/10 | 800 | 650 | 3050 | 2250 | 1180 | 2060 | 820*820 |
SZ11-1000/10 | 1000 | 690 | 3210 | 2280 | 1220 | 2080 | 820*820 |
SZ11-1250/10 | 1250 | 800 | 3740 | 2400 | 1370 | 2180 | 820*820 |
SZ11-1600/10 | 1600 | 1000 | 5150 | 2520 | 1500 | 2150 | 820*820 |
We are China 11kv Sz11 Type on-Load Tap Changing Distribution Transformer manufacture and supplier,You can get more details with Email,you will get cheap price or factory price.
Get Latest Price Request a quote
Popular Amorphous Transformer Products
11kv Single Phase Overhead Conventional Pole Mounted Distribution Transformer
Step Voltage Regulator 11kv Voltage Stabilizer
10kv 11-33kv Sc (H) 11-30~500kVA Distribution Transformers
Type Sc (B) 10-50~3150kVA Distribution Transformer 11kv 33kv
Dry-Type 11kv 33kv Transformer Dimensions with Protection Enclosure
630~2500kVA 11kv 12kv 15kv Dry Transformers
Popular Oil Transformet Products
11kv Dry Type Power Distribution Transformer
Manufacture 11-24kv Dry-Type Power Transformer
Compact Type Three Phase Pad Mounted Distribution Transformer
Rectifier Special Transformer 11kv 33kv
230kv Level Oil-Immersed Power Transformer
69kv 66kv Oil-Immersed Power Transformer IEC Standard
Popular Power Transformer Products
Oil Immersed Distribution Transformer 11kv IEC Standard
Traction Transformer 132kv 126kv Tap Changing Oltc IEC Standard
11kv 12kv 15kv 30~1000kVA Distribution Transformers
Prefabricated Substation Transformer Enclosure 6.6kv
230kv 132kv Oil-Immersed Power Transformer IEC Standard
11kv D11 Single Phase Oil Immersed Transformer
Popular silverstone-electric Products
Station Post IEC Class Porcelain Insulator/33kv Line Post Insulator
11kv Sczb10-250~2500kVA on-Load Tap-Changing Distribution Transformer
Single Core Cold Shrinkable Outdoor Termination Kit
One Time Use Lock Seal Plastic Padlock Security Seals Lock with Metal
Expulsion Fuse Cutout / Dropout Fuse 27kv
Insulating Sleeve Polyolefin Heat Shrink Tubing
Tags: Amorphous Transformer, Oil Transformet, Power Transformer, silverstone-electric