Padmounted Transformer 100 Kva 13.8 Kv

Wenzhou XiFa Electric Power Equipment Co., Ltd is a company mainly engaged in the production of transformers. It has established a professional technical team and has skilled workers. Padmounted transformer 100 kva 13.8 kv was designed and developed using advanced technology and high quality materials. It has passed various type test reports and complies with international standards such as IEC. This transformer can provide you with safe and reliable service for a long time, and can meet your economic and efficient requirements by reducing losses.

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Product Description

The rated power of this padmounted transformer 100 kva 13.8 kv is cooled by ONAN. The primary voltage is 13.8kV and the tap range is ±2*2.5% (NLTC). The secondary voltage can be customized and selected. They form a Dyn11 vector group.

Designed with advanced technology and uses high quality materials and components, thus ensures padmounted transformer 100 kva 13.8 kv reliable quality and a long operating time. The equipment is meticulously crafted from high permeability oriented silicon steel sheets, high purity conductive windings, aging resistant insulating materials and durable sealed components. The quality of core components is strictly controlled to ensure the stability of the entire machine from the source.

With outstanding resistance to electrical shock and corrosion from moisture,the Padmounted transformer 100 kva 13.8 kv has excellent insulation performance. It can adapt to various outdoor climate conditions. During operation, it has low vibration and low noise, and the no-load loss and load loss are well controlled, resulting in good energy saving and consumption reduction effects.

The mechanical structure of padmounted transformer 100 kva 13.8 kv is stable and reliable, with a compliance level of sealing protection that meets standards. This effectively prevents oil leakage problems and combines protection and safety features.

Padmounted Transformer 100 Kva 13 8 Kv

Technical parameter:

Product Name	padmounted transformer 100 kva 13.8 kv
Cooling Method	ONAN
Primary (HV) Voltage	13.8 kV
Secondary (LV) Voltage	120/240 V / 480 V / 600 V
Impedance	1.5% to 4%
Dimensions	1200 x 965 x 910 mm
No Load Loss	≤280 W
Load Loss	≤1010 W
Tap Changer Range	±2×2.5%
Voltage Regulation Rate	≤3%
Insulation Class	HV:17kV, LV:1.2kV

For a padmounted transformer 100 kva 13.8 kv that is in operation, suppose a three phase metallic short circuit occurs at the low voltage side outlet of the transformer, but the high voltage side fuse has not blown and the 13.8 kV outlet circuit breaker of the upstream substation has not tripped either. what are the possible reasons for this phenomenon?

Check for any of the following situations:

1. Whether the rated current of the fuse is too large, whether the fuse has aged but not broken, or whether the fuse and the load switch linkage mechanism are stuck.

2. Whether the over current protection setting for the upstream circuit breaker set too high and the short circuit current value exactly within the protection dead zone.

3. Internal fault characteristics of the padmounted transformer 100 kva 13.8 kv may be occur. The transformer itself already suffered inter turn short circuit or core failure, resulting in the short circuit current being limited to a relatively low value (but still much higher than the rated current), which is not sufficient to instantly melt the fuse but is sufficient to cause continuous heating.

4. Check whether this padmounted transformer 100 kva 13.8 kv connected in Dyn11 or Yyn0. When a three phase short circuit occurs on the low voltage side, will there be a situation on the high voltage side where the current of the non fault phases does not rise significantly, thereby preventing the upstream zero sequence or negative sequence protection from activating.