DOWEI

Disconnector Routine Tests

The function of air-break disconnectors in high voltage power systems is to provide electrical and visible isolation of one part of the system.

Circuit Breaker Routine Tests

The routine tests for AC circuit breakers are performed for the purpose of ensuring the quality and guaranteed performance of the material, design and assembly of the circuit breaker and are made on each apparatus manufactured.

Current Transformer Routine Tests

The following items are the routine testing items of High Voltage Current Transformer according to IEC 61869-1: 2007, IEC 61869-2: 2012

Surge Arrester Classification IEC 60099-4

New Arrester Classifications and Energy Handling Requirements IEC 60099-4 Ed 3.0 2014

Shunt Reactor Testing

Type Tests of Shunt Reactor -Measurement of Winding Resistance -Measurement of Insulation Resistance -Measurement of Reactance

Checklist for Substation Acceptance and Maintenance Testing

Substation, a place where voltage is changed. In order to transmit the electric energy from the power plant to a distant place, the voltage must be raised to become high-voltage electricity, and the voltage must be lowered as needed near the user.

Dry Type Transformer Testing

1. Routine Tests: -Measurements of windings resistances (IEC 60076-1) -Voltage ratio measurement and check of phase displacement (IEC 60076-1) -Load loss and short-circuit impedance measurements (IEC 60076-1)

ANSI Standard Device Numbers & Common Acronyms

IEEE Standard for Electrical Power System Device Function Numbers, Acronyms, and Contact Designations, IEEE Std C37.2-2008.

High Voltage Gas Insulated Switchgear (GIS) Testing

Once of the crucial steps in development of GIS equipment are type tests. They are done to check the performance of the GIS equipment. The ratings defined in the type tests will also be declared as default data when the GIS equipment is in the production cycle.

High Voltage Direct Current (HVDC)

High Voltage Direct Current (HVDC) systems enable utilities to move more power further, efficiently integrate renewables, interconnect grids, and improve network performance. HVDC systems utilize power electronics technology to convert AC and DC voltage and are ideal for supporting existing systems or building new power highways.

Transformer Testing - IEC 60076

Transformers Test | Type Tests, Routine Tests and Special Tests

Surge Arrester Routine Tests

The following items are the routine testing items of High Voltage - ZnO Surge Arrester according to IEC 60099-4

Insulator Routine Tests

The following items are the routine testing items of High Voltage - Post Insulator according to IEC 60168

MV GIS Switchgear Routine Tests

The following items are the routine testing items of MV GIS Switchgear according to IEEE Std C37