IP Rating – What Does It Mean?

Somewhere in the fine print of most product bulletins, you’ll find an IP rating. Is this just “boilerplate”? No! It gives vital information that could be critical to your application.

Megger products are typically rated to IP54. (If you want to sound thoroughly knowledgeable, that’s IP five-four, not fifty-four. Each digit relates to a separate rating, not to each other.) “IP” stands for “ingress protection”, the degree to which the instrument can withstand invasion by foreign matter. This has been established by the IEC (International Electrotechnical Commission), in their Standard 529. The higher the number, the better the protection. The first digit refers to particulate ingress. This reflects the degree to which solid objects can penetrate the enclosure. The typical Megger rating of 5 indicates “dust protected”, as well as protected from access with a wire down to 1.0 mm. There is only one higher category: “dust tight”.

The second digit refers to moisture ingress. A rating of 4 indicates “splashing water, any direction”. The higher ratings of 6 through 8 indicate “powerful jetting water” and “temporary” or “continuous” immersion. Not too many electricians need to work under water!

So what? Well, suppose an instrument under consideration was rated only to IP43. What would that tell you about its usability? Could it be thoroughly utilized in a quarry or cement plant? Hardly! The particulate rating 4 indicates “objects equal or greater than 1 mm”. That’s a boulder in comparison to particles typically produced by industrial processes. Flying dust could put the unit out of commission before the purchasing agent is done stalling payment. What about a paper mill? Wrong application again! The moisture rating 3 covers “spraying water, up to 60° angle from vertical.” This is adequate protection for occasional incidental encounters, but still leaves a wide margin for invasion where water is a common hazard. Moisture could penetrate the unit, corrode and short out the board, and produce nagging repair delays that could critically disrupt a time-focused preventive maintenance program.

By contrast, a typical Megger model rated to IP 54 will perform up to and beyond expectations in all of these environments. Protected against dust and moisture under all but the harshest of conditions, the instrument will meet the test for a full life expectancy. Avoid the embarrassment of having to tell the “boss” or purchasing agent that a unit has failed when they still think of it as “brand new”. Make a mental review of the types of environment in which the instrument will possibly be used, the nature of foreign materials to be encountered, and what that will demand in terms of IP rating. Then purchase a unit that matches or exceeds that requirement, and don’t be caught red-faced with a “brand new” instrument that is literally “choked with dust” or “dead in the water”.

Check out the New Megger SCT+MMA+SMA

Megger SCT+MMA+SMA. Megger (1001-711) SCT2000 + Multimode + Singlemode Kits

Fiber Optic Adapters

- Certify singlemode and multimode fiber optic links at 850, 1300, 1310 and 1550 nm wavelengths
- Provide fully compliant Tier 1 Certification
- Capabilities include length, loss and power measurements, power meter and light source
- Perform bi-directional testing without swapping primary and secondary units
- Integrated VFL for diagnosing link problems
- Most intuitive and easy to operate fiber optic certification tester on the market

As the number of fiber optic links in the network increases it s essential that your certification tester seamlessly certifies both copper and fiber, efficiently combining all media results together for analysis and reporting. The SCT-MMA and SCT-SMA fiber optic adapters fulfill this need by converting the SCT into a fully compliant Tier 1 multimode and singlemode fiber optic certification tester. Now you can confidently certify all of your copper and fiber optic links with the snap of an adapter.

The SCT fiber optic solution offers powerful capability and features including length measurement, two-fiber, dual-wavelength loss measurements, single and bi-directional fiber measurements, power meter mode, light source mode, Fiber-Map and visual fault locator (VFL) capability. The SCT Autotest differs from other units by returning a length measurement and four loss measurements when testing dual fibers.

Fully Compliant Tier 1 Certification

The SCT fiber optic adapters create a fully Tier 1 compliant testing solution measuring length, loss, and polarity.

The SCT also differs from some units by performing bi-directional testing on two fibers at two wavelengths without exchanging the Primary and Secondary units.

Testing Fiber and Copper is a Snap

Fiber optic and copper certification is a snap with the SCT. Switching between copper and fiber certification is faster and more reliable than any other solution, simply snap in an adapter. Only the SCT allows the user to create dual media projects that store all necessary copper and fiber optic certification parameters in one project. With dual media projects and the ability to automatically recognize copper and fiber optic adapters the SCT can seamlessly switch between copper and fiber optic testing and project parameters with the snap of an adapter.

Visual Fault Locator

The SCT fiber optic adapters include a visual fault locator (VFL) as an easy to use troubleshooting tool. The VFL can locate and visibly identify faults on fiber optic cables. The VFL features a 635-nm visible red laser source. The presence of the VFL s red light indicates a trouble spot in the fiber such as a break or sharp bend. The VFL can be used with either multimode or singlemode fiber. The VFL creates a continuous or modulated light source powerful enough to escape from sharp bends and breaks in jacketed or bare fiber as well as poorly mated connectors, making it ideal for locating trouble spots in jumper cables, distribution frames, splice strays, patch panels, cable splice points and for tracing fiber runs.

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Mike is a finance industry executive with expertise in test, IT and avionics equipment acquisition, resale, residual valuation, leasing, renting and consignment.
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