100kVA 20kv 0.4kv Earthing Transformer Grounding Transformers

100kVA 20kv 0.4kv Earthing Transformer Grounding Transformers image

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Basic Info.

Model NO.

SL11 100/20/0.4KV

Cooling Method

Oil-immersed Type Transformer

Winding Type

Customized

Certification

ISO9001-2000, ISO9001, ISO9001-2000, ISO9001

Usage

Single-phase Transformer, Rectifier Transformer, Combined Transformer, Power Transformer, Distribution Transformer, Single-Phase Transformer, Rectifier Transformer, Combined Transformer, Power Transformer, Distribution Transformer, Earthing Transformer

Frequency Characteristics

50Hz 60Hz

Shape of Core

Ring

Brand

Ville

Transport Package

Nude, Wooden Case

Specification

IEC, CE

Trademark

Ville industrial

Origin

China

HS Code

8514300020

Production Capacity

100 Sets Per Year

Product Description

Grounding Transformers are designed to provide an artificial, neutral point for ungrounded three phase power systems.

During the line-to-ground faults, grounding transformers provide an easy path to ground faults, thus limit the fault currents and transient over-voltages.

Grounding transformers normally carry short-circuit ground current until the circuit breaker clears the fault. Therefore, they have short time ratings.

The kVA rating of a earthing transformer depends on the normal line-to-neutral voltage and the fault current value for a specified time, such as seconds to minutes.

Voltage	Up to 22kV
Operating Voltage	20kV
Standard	IEC 60076-6 or Equivalent
Rated Neutral current
Power rating	100kVA
Voltage Rating HV/LV	20/0.4kV
Cooling methods	ONAN
Frequency	50 Hz
Installation	Outdoor
Zero sequence impedance	19 Ohm
No phase	3
Voltage regulation range (No of Taps)	5
Temperature rise for the windings	As per IEC standard
Winding material	Copper
Insulation level	According to the rated voltage (IEC70076-3)
Impedance Voltage	5.5 %
Ambient temperature	-40 to +40 °C, other temperatures on request
Vector group	ZNyn11
Voltage regulation Range (No.of Taps)	5
Bushing	porcelain
Creepage	31mm/kV
Breather	Silica gel

Please take a brief moment and use the “Check List” below to gather the following (13) basic pieces of Grounding Transformer information:

Winding configuration; either Zig Zag or Two Winding.
Voltage(s) and BIL; The line-to-line value of the system to which the grounding transformer is to be connected. If a two winding grounding transformer is required, the secondary voltage must be provided as well.
Continuous neutral current.
System available neutral fault current and duration; example 500 amps for 10 seconds, 4000 amps for 2 seconds.
Zero Sequence impedance percentage.
Per phase impedance in Ohms.
Per phase resistance in Ohms.
X/R ratio; typically a value > 4.0.
Special application conditions; i.e. 2000 MASL, etc.
Enclosure construction or NEMA designation preference; i.e. high security compartmentalized padmounted, standard ventilated or substation design, special paint color, etc.
Terminal connectivity preference; i.e. dead front, live front, conventional terminals, etc.
Winding material; CU if not specified.
Transformer temperature rise; 150° C if not specified.

Sales team:

Our advantages:

Quality Assurance

–From the very beginning, VILLE ensures quality in every step to achieve the best quality.

Experience Sharing

–With more than 30 years’ experience in power industry, VILLE brings you an optimized solution.

Global Service

–Wherever you are, VILLE global network will support and provide you with value.

Quick Response

–In response to your needs without delay, VILLE knows the value of your time.

Thanks for choosing VILLE as your reliable partner and
please trust both of us will create a brilliant future!

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