1520 S. Hellman Avenue • Ontario, CA 91761 • USA Tel: (909) 923-9390 • Fax: (909) 923-9391

www.vanguard-instruments.com

ATO-400/400P/600/600P Line

The Vanguard ATO micro-ohmmeter product line is specifically designed for sub-station applications to measure EHV circuit-breaker contact resistances, bushing contact joints, or any low resistance. These microprocessor-controlled micro-ohmmeters can accurately measure resistances ranging from 1 micro-ohm to 300 milliohms. The ATO-400/400P outputs an un-filtered direct current from 10A to 400A while the ATO-600/600P outputs an un-filtered direct current from 10A to 600A. The ATO-400P and ATO-600P feature a built-in 2.5” wide thermal printer for printing test reports in the field.

The ATO product line has been in production since 2006, and over 100 units have been sold world-wide.

ATO-400/400P/600/600P Line

Argentina South KoreaInducor Ingeniera S.A. World Market Corporation

Brazil SpainB D B il Ltd C l

Partial Client List

Baur Do Brasil Ltda Cepal

China UAEPrecision International Corp Al Yakout Electrical Fittings Trading L.L.C.

AYT International LLC

EgyptEngineering Trade Office USAEngineering Trade Office USA

All Supplies

Indonesia Electro Rent Corporation

PT Surya Prima Eltrindo Great River Energy

Hestco Inc

Jamaica Intellirent - Acct Payable

Jamaica Public Service Co Ltd Northwest Iowa Power Coop

Portland GE

Malaysia RCID Utilities Div A/P

Labmetrik Electrical Sdn Bhd Roden Electric

Tesla Motors Inc

MexicoUniversidad Nacional De La Plata Venezuela

VCB BreakersVCB Breakers

New Zealand VEPCA

Fraser Engineering Services Ltd

VietnamSaudi Arabia Ha Long Inspection & Technical Service Joint Stock

ARABIAN ARROWS Haintec JSC

South AfricaELEQUIP TRADING S.A.