AutoScanAll-In-One Operational Analyzer for All Types of Switchgear

Enhanced Quality Assurance

AutoScan can be designed for tes�ng the following Switchgear types:

AutoScanAll-In-One Operational Analyzer for All Types of Switchgear

Our range of fully customizable and configurable AutoScan Switchgear Test Systems are used for tes�ng various

components that are used in power genera�on, transmission and distribu�on field. AutoScan is an opera�onal

analyzer that is used for performing rou�ne tests for final acceptance.

Ÿ Low voltage (LV) to ultra high voltage (UHV) circuit breakers – up to 1200 kV

Ÿ Gas insulated switchgear (GIS)

Ÿ Vacuum circuit breakers (VCB)

Ÿ Ring main units (RMU)

Ÿ Loco-head circuit breakers

Ÿ Magne�c Actuator and Actuator operated breakers

Ÿ Isolators/disconnectors

Ÿ Load break switches (LBS)

Ÿ On-load tap changers (OLTC)

Ÿ Mul�-channel �ming analyzer

Ÿ Mul�-channel mechanism travel analyzer

Ÿ Mul�-channel coil and motor current analyzer

Ÿ High power and adjustable coil and motor supplies (AC and DC)

Ÿ High-accuracy sta�c contact resistance meter

Ÿ Dynamic contact resistance meter

AutoScan is an all-in-one solu�on which has:

Tests Performed

Ÿ Contact travel

AutoScan makes use of special transducers to record the travel signature curve of main contacts/rota�ng sha�s during the switchgear opera�on. Travel measurements assess the rate of displacement of the contact assembly. This assessment help in understanding whether the switchgear contact opera�ng mechanism is working appropriately. Devia�ons from the expected signature help finding possible mechanical defects of the main contacts, moving sha�s, and springs.

The travel measurements also include measurement of velocity, inser�on, contact gap, over-travel and rebound.

Ÿ Coil & Motor current analysis

Devia�ons from the expected signature curves show possible electrical or mechanical defects of the trip and close coils and incorrect coordina�on of the auxiliary contacts and release latches.

The analysis of motor currents show the in-rush current, average current, and spring charging �me. Spring charging �me analysis help in determining the condi�on of the spring mechanism.

Ÿ Timing tests

AutoScan assesses the main contact and auxiliary contact �mings. This assessment is useful for measuring the contact bounces and non-simultaneity of contacts and helps in finding the possible electrical or mechanical defects. It is possible to detect incorrect mechanical adjustments and wear phenomena of the switchgear by measuring the differences between the fastest and slowest phases.

Possible sequences: O, C, CO, OC, O-CO, and other Auto Reclosing sequences

All test sequences can be carried out with flexible test se�ngs.

AutoScan can be designed for tes�ng the following Switchgear types:

AutoScanAll-In-One Operational Analyzer for All Types of Switchgear

Our range of fully customizable and configurable AutoScan Switchgear Test Systems are used for tes�ng various

components that are used in power genera�on, transmission and distribu�on field. AutoScan is an opera�onal

analyzer that is used for performing rou�ne tests for final acceptance.

Ÿ Low voltage (LV) to ultra high voltage (UHV) circuit breakers – up to 1200 kV

Ÿ Gas insulated switchgear (GIS)

Ÿ Vacuum circuit breakers (VCB)

Ÿ Ring main units (RMU)

Ÿ Loco-head circuit breakers

Ÿ Magne�c Actuator and Actuator operated breakers

Ÿ Isolators/disconnectors

Ÿ Load break switches (LBS)

Ÿ On-load tap changers (OLTC)

Ÿ Mul�-channel �ming analyzer

Ÿ Mul�-channel mechanism travel analyzer

Ÿ Mul�-channel coil and motor current analyzer

Ÿ High power and adjustable coil and motor supplies (AC and DC)

Ÿ High-accuracy sta�c contact resistance meter

Ÿ Dynamic contact resistance meter

AutoScan is an all-in-one solu�on which has:

Tests Performed

Ÿ Contact travel

AutoScan makes use of special transducers to record the travel signature curve of main contacts/rota�ng sha�s during the switchgear opera�on. Travel measurements assess the rate of displacement of the contact assembly. This assessment help in understanding whether the switchgear contact opera�ng mechanism is working appropriately. Devia�ons from the expected signature help finding possible mechanical defects of the main contacts, moving sha�s, and springs.

The travel measurements also include measurement of velocity, inser�on, contact gap, over-travel and rebound.

Ÿ Coil & Motor current analysis

Devia�ons from the expected signature curves show possible electrical or mechanical defects of the trip and close coils and incorrect coordina�on of the auxiliary contacts and release latches.

The analysis of motor currents show the in-rush current, average current, and spring charging �me. Spring charging �me analysis help in determining the condi�on of the spring mechanism.

Ÿ Timing tests

AutoScan assesses the main contact and auxiliary contact �mings. This assessment is useful for measuring the contact bounces and non-simultaneity of contacts and helps in finding the possible electrical or mechanical defects. It is possible to detect incorrect mechanical adjustments and wear phenomena of the switchgear by measuring the differences between the fastest and slowest phases.

Possible sequences: O, C, CO, OC, O-CO, and other Auto Reclosing sequences

All test sequences can be carried out with flexible test se�ngs.

Ÿ Sta�c Contact Resistance test (millivolt drop test)

AutoScan tests contact resistance of the closed switchgear to ensure that the load current flows with low losses. A sufficiently high contact resistance can cause substan�al hea�ng and subsequent failure of the switchgear’s contacts.

Our MVT millivolt drop tester-cum-contact resistance meter is available as an add-on accessory to AutoScan for performing sta�c contact resistance measurements.

Ÿ Dynamic Contact Resistance test (DCRM test)

AutoScan performs dynamic contact resistance measurement (DCRM) analysis on the switchgear to measure the wear of the arcing contacts of SF6 MV, HV, and EHV switchgears. Dynamic contact resistance measurement is important for assessing the switchgear contact condi�on a�er several fault trips on-site for finding out erosions, pi�ng, sluggishness, residual arcing �p length, etc. without opening the interrupter. This cannot be

detected by performing sta�c contact resistance measurement.

The measurement also helps to record the benchmark signature of the arcing contacts, which is used in future for on-site assessment of the arcing contact condi�on.

Our DMVT dynamic contact resistance meter is available as an add-on accessory to AutoScan for performing dynamic contact resistance measurements.

Ÿ Voltage varia�on test on auxiliary circuits

AutoScan’s Auto-set power supplies will automa�cally set an exact voltage condi�on as per the test specifica�ons with respect to the rated voltage of the auxiliary supply and measure the respec�ve behaviour of the close and trip coils. This test helps in tes�ng the performance of auxiliary circuits under varying supply voltage condi�ons.

The AutoScan system can be configured to perform other special measurements as per the specific requirements of the manufacturer.

So�ware Features

Ÿ Windows-based so�ware allows sequencing of tests, storing test setups, viewing reports, and analyzing and handling graphical test data using a PC

Ÿ Easy-to-use with pre-programmed test sequences and pass-fail limits

Ÿ Facility for se�ng the pass-fail limits to a certain percentage of the nominal value

Ÿ Test cer�ficate can be stored and printed as per the manufacturer’s format

Ÿ All test data is stored in a database for archival and analysis

Features

Ÿ PC-based fully automa�c test system with an ability of performing a wide range of tests

Ÿ Custom designed and configured to match the specific needs of the customer

Ÿ Modular and expandable to meet fast evolving needs of the industry

Ÿ Available in rack, work-table, and trolley configura�ons to make op�mal u�liza�on of shop- floor space

Ÿ Built-in power sources with precision regulated outputs for coils and motors of switchgear resul�ng in stable and reproducible tes�ng condi�ons

Ÿ Specially designed fixtures for moun�ng transducers to the mechanisms for performing travel measurements

Ÿ Facility for connec�ng external power supply units if required

Ÿ Op�on of using third-party hardware, such as, NI DAQ, Keysight (formerly Agilent) or TDK Lambda power supplies, etc.

Customer Benefits

Ÿ : Analyzer, millivolt drop tester, All in one systemDCRM, powerful Auto-set AC/DC power supplies.

Ÿ Comprehensive system speeds up the whole test process

Ÿ One pla�orm for tes�ng almost all types of switchgear

Ÿ Faster and safer connec�ons to the switchgear

Ÿ No need for any r isky and �me-consuming connec�ons to live AC/DC sources

Ÿ Delivers one combined test report for all tests carried out

Ÿ Scope for future expansion

Opera�ons to be performed

Graphical result for detailed analysis Numerical results in grid view along with limits

Test status

Informa�on of Switchgear under test

Ÿ Sta�c Contact Resistance test (millivolt drop test)

AutoScan tests contact resistance of the closed switchgear to ensure that the load current flows with low losses. A sufficiently high contact resistance can cause substan�al hea�ng and subsequent failure of the switchgear’s contacts.

Our MVT millivolt drop tester-cum-contact resistance meter is available as an add-on accessory to AutoScan for performing sta�c contact resistance measurements.

Ÿ Dynamic Contact Resistance test (DCRM test)

AutoScan performs dynamic contact resistance measurement (DCRM) analysis on the switchgear to measure the wear of the arcing contacts of SF6 MV, HV, and EHV switchgears. Dynamic contact resistance measurement is important for assessing the switchgear contact condi�on a�er several fault trips on-site for finding out erosions, pi�ng, sluggishness, residual arcing �p length, etc. without opening the interrupter. This cannot be

detected by performing sta�c contact resistance measurement.

The measurement also helps to record the benchmark signature of the arcing contacts, which is used in future for on-site assessment of the arcing contact condi�on.

Our DMVT dynamic contact resistance meter is available as an add-on accessory to AutoScan for performing dynamic contact resistance measurements.

Ÿ Voltage varia�on test on auxiliary circuits

AutoScan’s Auto-set power supplies will automa�cally set an exact voltage condi�on as per the test specifica�ons with respect to the rated voltage of the auxiliary supply and measure the respec�ve behaviour of the close and trip coils. This test helps in tes�ng the performance of auxiliary circuits under varying supply voltage condi�ons.

The AutoScan system can be configured to perform other special measurements as per the specific requirements of the manufacturer.

So�ware Features

Ÿ Windows-based so�ware allows sequencing of tests, storing test setups, viewing reports, and analyzing and handling graphical test data using a PC

Ÿ Easy-to-use with pre-programmed test sequences and pass-fail limits

Ÿ Facility for se�ng the pass-fail limits to a certain percentage of the nominal value

Ÿ Test cer�ficate can be stored and printed as per the manufacturer’s format

Ÿ All test data is stored in a database for archival and analysis

Features

Ÿ PC-based fully automa�c test system with an ability of performing a wide range of tests

Ÿ Custom designed and configured to match the specific needs of the customer

Ÿ Modular and expandable to meet fast evolving needs of the industry

Ÿ Available in rack, work-table, and trolley configura�ons to make op�mal u�liza�on of shop- floor space

Ÿ Built-in power sources with precision regulated outputs for coils and motors of switchgear resul�ng in stable and reproducible tes�ng condi�ons

Ÿ Specially designed fixtures for moun�ng transducers to the mechanisms for performing travel measurements

Ÿ Facility for connec�ng external power supply units if required

Ÿ Op�on of using third-party hardware, such as, NI DAQ, Keysight (formerly Agilent) or TDK Lambda power supplies, etc.

Customer Benefits

Ÿ : Analyzer, millivolt drop tester, All in one systemDCRM, powerful Auto-set AC/DC power supplies.

Ÿ Comprehensive system speeds up the whole test process

Ÿ One pla�orm for tes�ng almost all types of switchgear

Ÿ Faster and safer connec�ons to the switchgear

Ÿ No need for any r isky and �me-consuming connec�ons to live AC/DC sources

Ÿ Delivers one combined test report for all tests carried out

Ÿ Scope for future expansion

Opera�ons to be performed

Graphical result for detailed analysis Numerical results in grid view along with limits

Test status

Informa�on of Switchgear under test

AutoScan Configura�on

Communica�on Interfaces

Ÿ RS232, RS485, USB, Ethernet

Power Supplies Configura�ons

Ÿ 3ø AC, 1ø AC, DC (all PSUs up to 21 kVA)

Ÿ Auto, Manual

Ÿ Crest, Keysight (Agilent), TDK Lambda, others on request

Ÿ Main contact �mings

Ÿ Auxiliary contact �mings

Ÿ Contact bounce

Ÿ Non-simultaneity of contacts

Ÿ Linear and rotary travel signature

Ÿ Contact speed

Ÿ Inser�on

Ÿ Contact gap

Ÿ Contact wipe

Ÿ Over-travel

Ÿ Rebound

Ÿ Trip & Close coil current characteris�cs

Ÿ Trip & Close coil voltage

Ÿ Motor current

Ÿ Motor voltage

Ÿ Motor power

Ÿ Spring charging �me

Ÿ Sta�c contact resistance

Ÿ Dynamic contact resistance

Ÿ Gas pressure

Ÿ Air pressure

Ÿ Hydraulic pressure

Ÿ Ambient and other temperatures

Ÿ Torque

Measured Parameters

Construc�on

Ÿ Rack

Ÿ Worktable

Ÿ Trolley

Accessories

Ÿ MVT

Ÿ DMVT

Ÿ Endurance

Ÿ HV Tester (up to 5 kV)

Measuring Hardware

Ÿ Crest Data Acquisi�on Hardware

Ÿ NI DAQ

Our presence

Product specifications subject to change

AutoScan Configura�on

Communica�on Interfaces

Ÿ RS232, RS485, USB, Ethernet

Power Supplies Configura�ons

Ÿ 3ø AC, 1ø AC, DC (all PSUs up to 21 kVA)

Ÿ Auto, Manual

Ÿ Crest, Keysight (Agilent), TDK Lambda, others on request

Ÿ Main contact �mings

Ÿ Auxiliary contact �mings

Ÿ Contact bounce

Ÿ Non-simultaneity of contacts

Ÿ Linear and rotary travel signature

Ÿ Contact speed

Ÿ Inser�on

Ÿ Contact gap

Ÿ Contact wipe

Ÿ Over-travel

Ÿ Rebound

Ÿ Trip & Close coil current characteris�cs

Ÿ Trip & Close coil voltage

Ÿ Motor current

Ÿ Motor voltage

Ÿ Motor power

Ÿ Spring charging �me

Ÿ Sta�c contact resistance

Ÿ Dynamic contact resistance

Ÿ Gas pressure

Ÿ Air pressure

Ÿ Hydraulic pressure

Ÿ Ambient and other temperatures

Ÿ Torque

Measured Parameters

Construc�on

Ÿ Rack

Ÿ Worktable

Ÿ Trolley

Accessories

Ÿ MVT

Ÿ DMVT

Ÿ Endurance

Ÿ HV Tester (up to 5 kV)

Measuring Hardware

Ÿ Crest Data Acquisi�on Hardware

Ÿ NI DAQ

Our presence

Product specifications subject to change

Crest Test Systems is a pioneering company in the field of Test & Measurement. The Crest core

team has an experience of 30 years in the field of Switchgear Tes�ng. Our test systems are used

everyday to test switchgear on the shop-floors of all leading switchgear manufacturers and also in

government test and cer�fica�on labs. Apart from the Power Sector, Crest also designs and

manufactures customized test systems for Metros & Railways, Motor Manufacturing, Ba�ery

Industry, and Test & Cer�fica�on Labs.

25/5A/1/2, Nanded Phata, Sinhagad Road, Pune 411 041 +91 20 32419696 | www.crestech.co.in | info@crestech.co.in

Crest Test Systems Pvt. Ltd.