A Heritage of Westinghouse Engineering Service Division (ESD). AUTOMATIC VOLTAGE REGULATOR (AVR) • Retrofit old or obsolete Automatic Voltage Regulator (AVR) into modern Solid State   Electronic AVR. • Retrofit old Rotary Excitation System to modern Static Excitation System. BENEFITS • Eliminate excitation DC generator • Better response to voltage sag due to motor starting • Reduced maintenance • Increase plant availability VOLTAGE REGULATOR • Retrofit old or obsolete Magnetic Amplifier Type Voltage Regulator to modern   Electronic Automatic Voltage Regulator for Generator. BENEFITS • Better voltage tolerance • Faster voltage response • Reduced maintenance • Eliminate obsolete and expensive parts • More reliable operation PROTECTIVE RELAY • Retrofit old or obsolete Protective Relay to modern Microprocessor Based   Protective Relay System with optional upgrade to Bus Auto Transfer Scheme. BENEFITS • Prevent nuisance tripping • Communications capability • Improve tripping time, no impact on production • Increase plant availability SCR DRIVE RETROFIT From existing DC and SCR Drive and DC Motor to AC VFD Drive and AC Motor. REASONS • Obsolete and expensive spare parts • Unreliable • Frequent Failure • High Harmonics • Electrical and Electromagnetic Interference (EMI) SOLUTIONS • Retrofit to state of the art VFD and AC Motor • Engineering study of existing DC Drive and Motor • Engineering Design of VFD and AC Motor to suit existing mechanically driven load BENEFITS • Lower Losses • Cost Savings • Lower Harmonics Content • Eliminate EMI • More Reliable • Eliminate Breakdown and Down Time • Retrofit of bulk oil circuit breaker, minimum oil circuit • Maximise Production Time CIRCUIT BREAKER AND MOTOR STARTER • Retrofit of bulk oil circuit breaker, minimum oil circuit breaker, air circuit breaker and   contactor to vacuum circuit breaker and contactor. BENEFITS • Prevent sudden failure of old circuit breaker • Cost is only a fraction of the price of a complete switchgear and cable replacement • Retrofits can be carried out with minimum downtime and disruption to load • Circuit breaker life can be extended for another 20 to 30 years • In the case of frequently switcher circuit, vacuum contactor can be used in place   of circuit breaker • Protection and control system can be upgraded to include state-of-the-art   technology using automatic transfer scheme and microprocessor based protective   relays • Modern switching devices are virtually maintenance free • Progressive retrofits generate a valuable source of spare parts for breakers and   mechanism retained in service • Eliminate stocking of obsolete parts