Auto-Ohm 200 S3

DC Micro-Ohmmeter

The Auto-Ohm-200 S3 is Vanguard’s fourth generation, microprocessor-based, true DC micro-ohmmeter. It is designed for testing EHV circuit-breaker contact resistances, bushing contact joints, welding joints, or for any low-resistance measuring application. This high current and very lightweight (16.8 lbs/ 7.6 Kg) micro-ohmmeter is designed to meet the IEEE C57.09-1999 (5.15) requirement for testing circuit breaker contact resistance.

  • Very lightweight: 16.8 lbs. (7.6 Kg)
  • Measures circuit breaker contact resistance with safety ground on (with the Dual Ground option)
  • Stores test records on-board or on external USB Flash drive
  • 1 to 200A programmable test current
TYPE Portable Micro-Ohmmeter
PHYSICAL SPECIFICATIONSDimensions: 17" W x 7" H x 13" D (43.2cm x 17.8cm x 33cm) Weight: 16.8 lbs (7.6 Kg)
INPUT POWER 100 – 240 Vac, 50/60 Hz
RESISTANCE READING RANGE 10 milliohms at 200A to 5 ohms at 1A Typical Accuracy: ±(0.15% of reading + 0.15% FS) at test current of 10-200A
TEST CURRENT RANGE 1 Ampere to 200 Amperes (selectable in 1A steps); Thermally protected DC power supply.
DISPLAYBack-lit LCD (128 x 64 pixels), viewable in direct sunlight and low light levels
KEYPADRugged, 44-key "QWERTY" membrane keypad
INTERNAL TEST RECORD STORAGE128 test records. Each record can contain up to 64 readings.
EXTERNAL TEST RECORD STORAGEUp to 999 test records on external USB Flash drive
PC SOFTWAREWindows XP/Vista/7 Analysis Software (included with purchase)
SAFETYDesigned to meet IEC 61010 (1995), UL 61010-a, and CAS-C22.2 standards
ENVIRONMENTOperating: -10ºC to 50ºC (15ºF to +122ºF) Storage: (-30ºC to 70ºC (-22ºF to +158ºF)
HUMIDITY (MAX)90% RH @ 40˚ C (104˚ F) non-condensing
ALTITUDE (MAX)2000m (6562 ft) to full safety specifications
CABLES30 ft (9.1 m), #1 AWG test cables, power cord, ground cable
OPTIONSShipping case, 15 ft test cables, C-Clamp set, Hand Spike Set
WARRANTYOne year on parts and labor
Auto-Ohm 200 S3 Datasheet (English)
Auto-Ohm 200/DMOM-200 S3/DMOM-600 User's Manual
Auto-Ohm 200 S3/DMOM-200 S3/DMOM-600 Manual Del Usuario (Español)