SMC PRIME 600 Dynamic Micro Ohm Meter 600 Adc

The use of micro ohmmeters with 4-wire measurement method is a common procedure in the power field for low resistance measurements (in micro ohms and milliohms range), with the purpose of detecting and preventing future problems; it is performed in breakers, switchgear, busbars joints, switching contacts and critical connections, as well as also used in any other metallic connection checks of other installations in different industries.

The PRIME 600 is a micro ohmmeter that integrates both the contact resistance and the dynamic resistance measurement (DRM) as stand-alone unit; the dynamic resistance test, which is essential in analyzing the wear of the arcing contacts in SF6 and vacuum breakers, is a function never found before in micro-ohmmeters, so that with the PRIME is not required to combine several equipment for the complete static and dynamic resistance analysis, becoming an ideal option for circuit breaker testing.

The PRIME plot the DRM time/resistant curve that describes the resistance changes on the measured spot throughout a few milliseconds, for detecting contact anomalies and wear; the analysis of the relevant characteristics and values of this curve is an effective diagnostic way of the internal condition of the breaker contacts, and reveals potential problems related to the arcing contact condition without having to open the chamber.

The nature and dimensions of the electrical installations impose the need of accurate, high current injection, with the required high power, for obtaining reliable measurements throughout the entire setup; the injection range of the PRIME reach up to 600 A with pure DC generation (no ripple), which eliminates resistance distortions in elements with significant inductive characteristic, for example when checking a whole busbar and the resistance measurement could be affected by the nature of the DC injected; this high current micro ohmmeter features the higher power on the market (6 Vdc at 600 Adc) which enables for longer leads, less connections problems, and more accurate measurements.

The PRIME microohmeter provides an easy and intuitive use with touch screen and several pre-defined test modes, reducing the testing time; at the beginning of any test, the equipment checks for proper connectivity of the system, warning of possible connection mistakes; for increased safety, the Prime 600 demagnetizes the connected load at the end of each measurement.

The micro ohmmeter includes the easy generation of test reports, with direct printing on field through the built-in thermal printer, or saved to USB or PC with the PrimeSync software for grouping tests in a nice report exportable to office formats in PC.

For higher accuracy and being possible to compare the results measured at determined temperature with the standard values, the option of a temperature sensor, which transmits the temperature of the tested spot to the Prime 600, allows for results normalization in temperature.

An optional dual ground clamp accessory eliminates the need to remove the ground protection and speeds up the measurement process with a dual ground test method.

The high quality of the robust IP67 protective case also ensures the safe transport and use on harsh environments.

Dual Ground Operation
The Prime 600 features a derived current input that measures the current flowing across the earth circuit when both sides of the measured point are grounded. The measured value is then suppressed from the resistance calculation. This eliminates the need to remove the ground protection (which is unsafe and not always possible) and speeds up the measurement process.

The user only needs to attach a current/voltage converting clamp (offered as an option) to one of the grounding cables and connect it to the Prime 600’s derived current input. SMC offers a high quality current clamp, tested and verified for proper Dual Ground operation, among the Prime 600’s optional accessories.

For increased safety, the Prime 600 will de-magnetize the connected load at the end of each measurement.

DRM: Dynamic Resistance Measurement
Rather than just displaying a single result in micro Ohm, the Prime 600 can, upon user’s selection, perform a series of measurements very quickly across a fast moving contact, like those found in circuit breakers. The result is in this case a time / resistance graph that describes resistance changes on the measured spot throughout a few milliseconds. While requiring extreme accuracy and ultra fast recording from the Prime 600’s micro processor, this technique provides a very representative evaluation of the contact’s condition without having to open the chamber. This feature, never before found in a micro ohmmeter, provides substantial savings especially in the case of SF6 and vacuum isolated breakers, as opening the chamber of one of these devices for visual inspection is extremely costly.

Pre-defined Test Modes
The MODE CONFIGURATION screen provides a simple, straightforward access to 5 pre-defined operation modes, including the Dynamic Resistance Measurement mode and a few user preferences.

Measurement can be done in the traditional way or by having the Prime 600 follow you through a sequence of different test spots. Just touch the desired mode on the screen, rotate the encoder to adjust your current and press it to start.

The Prime 600 will prompt you with a confirmation message if it detects possible mistakes in your connections. Once the measurement is finished, it will de-magnetize the tested device, too, for your safety.

You can produce a printout of your test instantaneously or just save it in permanent memory. The PrimeSync utility will allow you to group tests in a nice report that can be exported to common office formats in your Windows PC.

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Features:

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• Dynamic Microohm meter up to 600 Adc
  
• Dynamic Resistance Measurement
  
• Dual ground operation
  
• Automatic de-magnetization function
  
• Alert on connection mistakes
  
• Touch-sensitive graphical display
  
• Pre-defined test modes
  
• Built-in thermal printer
  
• Removable USB storage
  
• PC download and reporting
  
• Sturdy, water proof ABS casing, IP67
  
• Temperature normalization
  

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What's In The Box:

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• (1) Nylon bag for cables and accessories
• (1) 3-meter ultra flexible current cables
• (1) 3-meter voltage measurement cables
• (1) USB A/B communication cable
• (1) Ground cable
• (1) 4-mm crocodile clips
• (1) 4-mm voltage spikes
• (1) Removable USB drive
• (1) PC software
• (1) Spare fuse
• (1) Power cord
• (1) Calibration certificate
• (1) User’s manual

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Brochure/Datasheet

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Instruction manual

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