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Rugged and lightweight, this handheld micro-ohmmeter is suitable for fieldwork, such as substations. Designed for several applications, this micro-ohmmeter is the most commonly used for contact resistance measurements of low-, medium- and high-voltage breakers, bus-bar joints, and other high-current links.
Features
Applications
Both sides grounded
Within electrical power utilities, switchgear owners and service companies, there is an increased emphasis on efficiency of operations, maintenance and service levels. There is an increased emphasis on health, safety, and environmental compliance. Experience has also shown demands for shorter time periods for testing, while the switchgear is less and less available to be taken out of service.
Many utilities require safety grounds to remain in place during station outages, therefore, it was designed with this field safety constraint in mind. DualGround means that the test object will be grounded on both sides throughout the test giving a safer, faster and easier workflow. Minimum time shall be spent in the substation and focus shall be on the test rather than the equipment.
Instrument front view
The Kelvin probes are used for a 4-wire Kelvin test. This is a way of measuring continuity resistances ensuring all contact and lead resistances are compensated for, allowing a much greater accuracy in measurements. Each Kelvin probe assembly has two probe tips: one tip is for the current generated; the other will measure the very small voltage present.
The Kelvin clamps use the same principle.
Equipment and methods that supports DualGround testing are associated with the DualGround symbol. This symbol certifies the use of groundbreaking technology and methods that enables a safe, fast and easy work?ow with both sides grounded throughout the test.
| Minimum Current Guarantee | Selectable 50/100 A Valid at resistance ?2m? |
| Pass/Fail | Settable from 1 ?? to 1999 m? |
| Number of Measurements on Fully Charged Batteries | Typical 2200 at I min = 50 A and 0.1 s Typical 800 at I min = 100 A and 0.1 s |
| Interference Suppression | Yes |
| Range | 0 to 1000 m? Selection: Auto |
| Resolution | 0 to 999 ??: 1 ?? 1 to 9.99 m?: 0.01 m? 10 to 99.9 m?: 0.1 m ? 100 to 1000 m?: 1 m? |
| Inaccuracy | 0 to 1999 ??: ±1% of reading ±1 digit 2 to 500 m?: ±2% of reading ±1 digit 500 to 1000 m?: ±4% of reading ±1 digit |
| Outputs (±) | Range: >100 A DC (R <2 m?) Output voltage (maximum): 2.5 V DC Generation duration: Selectable 0.1 s, 0.6 s, 3 s |
| Inputs | Sense (±): connector: 0.2" (4 mm) banana jack, voltage: ±3 V DC Trigger input: Threshold 8 V DC DC IN: 12 to 24 V DC, 2 A maximum |
| Logger | Data: Label, timestamp, I maximum, I minimum, I limit, resistance, measuring time, P/F limit Labeling schemes: Circuit breaker oriented or running numbers Capacity: 104 measurements |
| Wireless Communication | PC communication: Bluetooth |
| Audible Feedback | Different buzzer sounds |
| User Presets | 3 |
| Field Calibration | Yes |
| Temperature | Operation: -4 to 122°F (-20 to 50°C) Storage: -40 to 158°F (-40 to 70°C) |
| Relative Humidity | 5 to 95%, non-condensing |
| CE Mark | EMC: 2014/30/EU LVD: 2014/35/EU RoHS: 2011/65/EU |
| Classifications and Standards | Pollution degree: 2 Shock: IEC 60068-2-27 Vibration: IEC 60068-2-6 Transport: ISTA 2A Flammability class: V0 |
| Encapsulation | IP54 |
| Power Supply | Battery power: 5 x AA (HR6) 2700 mAh NiMH cells Recharge time: <12 hours Typical recharge time at 77°F (25°C): 3 hours Battery charger: Mains voltage 100 to 250 V AC, 50/60 Hz; power consumption 24 W; protection: against wrong battery type, low/high temperature Real time clock battery life: ?10 years |
| Dimensions | Instrument (excluding binding posts): 8.5 x 4.1 x 2.8" (217 x 104 x 72 mm) Carrying case: 15.6 x 11.8 x 7.5" (395 x 300 x 190 mm) |
| Weight | 2.2 lbs (1 kg) instrument only 11 lbs (5 kg) with accessories and carrying case |
| Minimum Current Guarantee | Selectable 50/100 A Valid at resistance ?2m? |
| Pass/Fail | Settable from 1 ?? to 1999 m? |
| Number of Measurements on Fully Charged Batteries | Typical 2200 at I min = 50 A and 0.1 s Typical 800 at I min = 100 A and 0.1 s |
| Interference Suppression | Yes |
| Range | 0 to 1000 m? Selection: Auto |
| Resolution | 0 to 999 ??: 1 ?? 1 to 9.99 m?: 0.01 m? 10 to 99.9 m?: 0.1 m ? 100 to 1000 m?: 1 m? |
| Inaccuracy | 0 to 1999 ??: ±1% of reading ±1 digit 2 to 500 m?: ±2% of reading ±1 digit 500 to 1000 m?: ±4% of reading ±1 digit |
| Outputs (±) | Range: >100 A DC (R <2 m?) Output voltage (maximum): 2.5 V DC Generation duration: Selectable 0.1 s, 0.6 s, 3 s |
| Inputs | Sense (±): connector: 0.2" (4 mm) banana jack, voltage: ±3 V DC Trigger input: Threshold 8 V DC DC IN: 12 to 24 V DC, 2 A maximum |
| Logger | Data: Label, timestamp, I maximum, I minimum, I limit, resistance, measuring time, P/F limit Labeling schemes: Circuit breaker oriented or running numbers Capacity: 104 measurements |
| Wireless Communication | PC communication: Bluetooth |
| Audible Feedback | Different buzzer sounds |
| User Presets | 3 |
| Field Calibration | Yes |
| Temperature | Operation: -4 to 122°F (-20 to 50°C) Storage: -40 to 158°F (-40 to 70°C) |
| Relative Humidity | 5 to 95%, non-condensing |
| CE Mark | EMC: 2014/30/EU LVD: 2014/35/EU RoHS: 2011/65/EU |
| Classifications and Standards | Pollution degree: 2 Shock: IEC 60068-2-27 Vibration: IEC 60068-2-6 Transport: ISTA 2A Flammability class: V0 |
| Encapsulation | IP54 |
| Power Supply | Battery power: 5 x AA (HR6) 2700 mAh NiMH cells Recharge time: <12 hours Typical recharge time at 77°F (25°C): 3 hours Battery charger: Mains voltage 100 to 250 V AC, 50/60 Hz; power consumption 24 W; protection: against wrong battery type, low/high temperature Real time clock battery life: ?10 years |
| Dimensions | Instrument (excluding binding posts): 8.5 x 4.1 x 2.8" (217 x 104 x 72 mm) Carrying case: 15.6 x 11.8 x 7.5" (395 x 300 x 190 mm) |
| Weight | 2.2 lbs (1 kg) instrument only 11 lbs (5 kg) with accessories and carrying case |
| Minimum Current Guarantee | Selectable 50/100 A Valid at resistance ?2m? |
| Pass/Fail | Settable from 1 ?? to 1999 m? |
| Number of Measurements on Fully Charged Batteries | Typical 2200 at I min = 50 A and 0.1 s Typical 800 at I min = 100 A and 0.1 s |
| Interference Suppression | Yes |
| Range | 0 to 1000 m? Selection: Auto |
| Resolution | 0 to 999 ??: 1 ?? 1 to 9.99 m?: 0.01 m? 10 to 99.9 m?: 0.1 m ? 100 to 1000 m?: 1 m? |
| Inaccuracy | 0 to 1999 ??: ±1% of reading ±1 digit 2 to 500 m?: ±2% of reading ±1 digit 500 to 1000 m?: ±4% of reading ±1 digit |
| Outputs (±) | Range: >100 A DC (R <2 m?) Output voltage (maximum): 2.5 V DC Generation duration: Selectable 0.1 s, 0.6 s, 3 s |
| Inputs | Sense (±): connector: 0.2" (4 mm) banana jack, voltage: ±3 V DC Trigger input: Threshold 8 V DC DC IN: 12 to 24 V DC, 2 A maximum |
| Logger | Data: Label, timestamp, I maximum, I minimum, I limit, resistance, measuring time, P/F limit Labeling schemes: Circuit breaker oriented or running numbers Capacity: 104 measurements |
| Wireless Communication | PC communication: Bluetooth |
| Audible Feedback | Different buzzer sounds |
| User Presets | 3 |
| Field Calibration | Yes |
| Temperature | Operation: -4 to 122°F (-20 to 50°C) Storage: -40 to 158°F (-40 to 70°C) |
| Relative Humidity | 5 to 95%, non-condensing |
| CE Mark | EMC: 2014/30/EU LVD: 2014/35/EU RoHS: 2011/65/EU |
| Classifications and Standards | Pollution degree: 2 Shock: IEC 60068-2-27 Vibration: IEC 60068-2-6 Transport: ISTA 2A Flammability class: V0 |
| Encapsulation | IP54 |
| Power Supply | Battery power: 5 x AA (HR6) 2700 mAh NiMH cells Recharge time: <12 hours Typical recharge time at 77°F (25°C): 3 hours Battery charger: Mains voltage 100 to 250 V AC, 50/60 Hz; power consumption 24 W; protection: against wrong battery type, low/high temperature Real time clock battery life: ?10 years |
| Dimensions | Instrument (excluding binding posts): 8.5 x 4.1 x 2.8" (217 x 104 x 72 mm) Carrying case: 15.6 x 11.8 x 7.5" (395 x 300 x 190 mm) |
| Weight | 2.2 lbs (1 kg) instrument only 11 lbs (5 kg) with accessories and carrying case |
