美国vanguard直流微欧计DMOM-200 S3
美国vanguard直流微欧计DMOM-200 S3 DC Micro-Ohmmeter
The DMOM-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 (19.8 lbs/ 8.9 Kg) micro-ohmmeter is designed to meet the IEEE C57.09-1999 (5.15) requirement for testing circuit breaker contact resistance.
The DMOM-200 S3 can accurately measure resistance values from 1 micro-ohm to 5 ohms. A 0.1 micro-ohm resolution is possible with current greater than 5A. The DMOM-200 S3 applies a selectable true DC test current from 1A to 200A to the resistance load to be tested. The DMOM-200 S3 controls the test current’s rise and fall rates. The test current rise and fall rate can be selected from 5 seconds to 10 seconds. An “Auto Test” mode is also available and can be initiated simply by applying the sense cables’ leads across the two points of interest in the current path. This feature is very convenient when measuring a sequence of several resistance values in a circuit breaker contact. The DMOM-200 S3 can also compare test results against preset limits and determine if a test passed or failed, and a “Pass” or “Fail” flag is displayed accordingly.
Very lightweight: 19.8 lbs. (8.9 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
Built-in 2.5" wide thermal printer
DMOM-200 S3
Cables

Cable Part Number
[8000-0076] 30' Current + 30' Sense Combination Cable Set with Alligator Clips 8000-0076
[8000-0147] Hand Spike Cable Set 8000-0147
[8000-0016] Power + Ground Combination Cable 8000-0016
DMOM-200 S3
Technical Specifications

TYPE Portable micro-ohmmeter
PHYSICAL SPECIFICATIONS Dimensions: 18" W x 7"H x 15" D (45.7cm x 17.8cm x 38.1cm)
Weight: 19.8 lbs (8.9 Kg)
INPUT POWER 100 – 240 Vac, 50/60 Hz
RESISTANCE READING RANGE 10 milliohms at 200A to 5 ohms at 1A
Accuracy:
1A to 4.99A: 1% ±10 micro-ohms
5A to 9.99A: 1% ± 2 micro-ohms
10A to 200A: 1% ± 1 micro-ohm
TEST CURRENT RANGE 1 Ampere to 200 Amperes (selectable in 1A steps);
Thermally protected DC power supply.
DISPLAY Back-lit LCD (128 x 64 pixels), viewable in direct sunlight and low light levels
KEYPAD Rugged, 44-key "QWERTY" membrane keypad
INTERNAL TEST RECORD STORAGE 128 test records. Each record can contain up to 64 readings.
EXTERNAL TEST RECORD STORAGE Up to 999 test records on external USB Flash drive
COMPUTER INTERFACE RS-232C
PRINTER Built-in 2.5" wide thermal printer
PC SOFTWARE WINOOWs XP/Vista/7 Analysis Software (included with purchase)
SAFETY Designed to meet IEC 61010 (1995), UL 61010-a, and CAS-C22.2 standards
ENVIRONMENT Operating: -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
CABLES 30 ft (9.1 m), #1 AWG test cables, power cord, ground cable
OPTIONS Shipping case, 15 ft test cables, C-Clamp set, Hand Spike Set
WARRANTY One year on parts and labor
Specifications are valid at nominal voltage and ambient temperature of +25C (+77F).



美国vanguard直流微欧计DMOM-600 DC Micro-Ohmmeter
The DMOM-600 is specifically 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 (33 lbs/ 15 Kg) micro-ohmmeter is designed to meet the IEEE C57.09-1999 (5.15) requirement for testing circuit breaker contact resistance.
The DMOM-600 can accurately measure resistance values from 1 micro-ohm to 5 ohms. A 0.1 micro-ohm resolution is possible with current greater than 5A. The DMOM-600 applies a selectable true DC test current from 10A to 600A to the resistance load to be tested. The DMOM-600 controls the test current’s rise and fall rates. The test current rise and fall rate can be selected from 5 seconds to 10 seconds. An “Auto Test” mode is also available and can be initiated simply by applying the sense cables’ leads across the two points of interest in the current path. This feature is very convenient when measuring a sequence of several resistance values in a circuit breaker contact. The DMOM-600 can also compare test results against preset limits and determine if a test passed or failed, and a “Pass” or “Fail” flag is displayed accordingly.
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
10 to 600A programmable test current
Built-in 2.5" wide thermal printer
DMOM-600
Cables

Cable Part Number
[8000-0147] Hand Spike Cable Set 8000-0147
DMOM-600
Technical Specifications

TYPE Portable micro-ohmmeter
PHYSICAL SPECIFICATIONS Dimensions: 16.8" W x 12.6" H x 12" D (42.7cm x 32cm x 30.5cm)
Weight: 33 lbs (15 Kg)
INPUT POWER 100 – 240 Vac, 50/60 Hz
RESISTANCE READING RANGE 1.5 milliohms at 600A to 450 milliohms at 10A
Accuracy:
10A to 49.9A: 1% ±2 micro-ohms
50A to 600A: 1% ± 1 micro-ohm
TEST CURRENT RANGE 10 Ampere to 600 Amperes (selectable in 1A steps);
Thermally protected DC power supply.
DISPLAY Back-lit LCD (128 x 64 pixels), viewable in direct sunlight and low light levels
KEYPAD Rugged, 44-key "QWERTY" membrane keypad
INTERNAL TEST RECORD STORAGE 64 test records. Each record can contain up to 96 readings
EXTERNAL TEST RECORD STORAGE Up to 999 test records on external USB Flash drive
COMPUTER INTERFACE RS-232C
PRINTER Built-in 2.5" wide thermal printer
PC SOFTWARE WINOOWs XP/Vista/7 Analysis Software (included with purchase)
SAFETY Designed to meet IEC 61010 (1995), UL 61010-a, and CAS-C22.2 standards
ENVIRONMENT Operating: -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
CABLES 15 ft (4.6 m), #1 AWG test cables, power cord, ground cable
OPTIONS Shipping case, C-Clamp set, Hand Spike Set
WARRANTY One year on parts and labor
Specifications are valid at nominal voltage and ambient temperature of +25C (+77F).