The Megger PAT250 can be used for insulation testing by measuring the separation of conductive parts or conductors from earth. Usually performed at 500V DC, the test is able to be conducted with ease, with the PAT250 able to maintain the necessary test voltage down to 0.5MΩ. The instrument can also perform substitute leakage testing, which enables for the measurements of AC leakage currents, which could differ from DC insulation test results. It is performed at less than 40V ac and does not require a mains supply. It is also used for the measurement of protective conductor currents and touch currents, in addition to an insulation test.
Continuity testing is also available, which is used for measuring the proper bonding of all metal parts in a Class I to the protective conductor. The tests are performed at 200mA DC in both polarities, which complies to UK and international regulations. Portable RCD testing (PRCD) and Differential Leakage (Protective Conductor Current), Touch Current and operational testing is also available, making the PAT250 a must have when it comes to safety testing.
PAT250SX vs PAT250SRX
The PAT250 is able to operate from both AA Alkaline or NiMH cells, with battery life typically four days. Should you opt to purchase the PAT250SRX, you will receive a multi-country AC mains charger, which allows for the PAT250 to be recharged when NiMH batteries are fitted.
Both the PAT250SX and PAT250SRX are supplied with an extensions lead adaptor, a mains plug test lead, a continuity/earth bond lead, a SELV/Mains voltage red test lead, as well as a carry case. The only difference between the two options is the AC mains charger that is supplied with the PAT250SRX, which is the rechargeable option.
Megger part number: 1016-040
Key Features
- Offers fast and simple safety testing in all environments, including offices, shops and business units
- Includes a 1 year licence for CertSuite PAT software
- Can save results to the cloud and is able to produce reports quickly
- Shows 'Pass' or 'Fail' indications with a simple tick or cross
- Is battery powered, but a rechargeable option is also available
- Safe 250V insulation and leakage test for surge-protected and IT equipment
- Can conduct continuity tests up to 200mA
- Offers substitute leakage testing
- Mains powered and 10 mA and 30 mA portable RCD lead testing
- Offers fast testing and report generation
- Has a tough rubber armour with built-in front cover
- The PAT250 has additional tests available for testing portable RCDs (PRCDs) of 10 mA and 30 mA
- Separate tests are available for continuity, insulation, mains powered leakage testing and SELV measurements can be using the Quick Test (QT) button
- The user is able to configure test group pass limits and test duration
- Bond lead resistance can be nulled to reduce measurement errors
- Live circuit measurement is available for testing the mains supply and socket polarity or electrical circuit voltage to 300V ac
- Can be used for testing fixed appliances