Test Equipment

The PAT420 from Megger is a new generation of downloading portable appliance testers, fully testing portable electrical equipment to the latest edition of the Code of Practice for the In-Service Inspection and Testing of Electrical Equipment. The PAT420 provides the same extensive memory and downloading capability and also 10 A and 25 A earth bond testing.

USB communication provides convenient download to a standard USB memory stick., and an on-board 10,000 record memory provides interruption-free testing for improved efficiency, with a large QWERTY keypad for fast data entry. Data is directly compatible with Megger PowerSuite® software for professional certification, and all products have the option of a barcode scanner and a thermal transfer barcode label printer operating directly from the USB port. Thermal transfer labels are highly resistant, stable and easily available.

5 soft-keys give direct access to frequently used functions, accelerating navigation through menus and therefore increasing productivity, where time is money. Both standard and customer configurable test groups are available for fast, flexible asset testing.

Tests available in the range include 250 V and 500 V insulation tests, 200 mA, 10 A and 25 A earth bond tests, differential, touch and alternative (substitute) leakage tests, operational VA tests, RCD trip-tests for portable RCDs, anti-surge and RCD protected extension leads and power cords. RCD testing is now a requirement of the UK Code of Practice.

Accessories supplied with all models include a combined earth-bond and insulation test lead, an adaptor for testing 230 V extension leads, a laptop power supply adaptor, and a carry-case for convenient product and lead storage. All instruments also include Download Manager software, to enable data to be converted into a CSV format which can be read directly on a PC using Microsoft® Excel.

Megger PowerSuite software can be purchased to compliment any PAT400, providing full databased asset management and professional electronic certificate generation, providing options for multiple clients and locations.

There is a legal requirement for any landlord, employer or owner of a place of work or public place, to ensure that all electrical equipment accessible by tenants, employees or the public is maintained in a safe condition, and an acceptable method of ensuring this is by routine electrical testing. This can be performed by electrical contractors, specialist PAT testing organisations, maintenance departments, or facilities management companies.

The PAT420 is suitable for performing portable appliance testing in locations such as hotels, public houses, schools, colleges, nurseries, shops, offices, theatres, banks, restaurants, cafés, sports and leisure facilities, cinemas, factories and hair salons etc. where high volume testing requires that accurate records may be difficult to maintain, or aided by, on-board memory and download to management software.

	PAT420
SUPPLY
230 V
Suppy measurement
EARTH BOND/CONTINUITY
200 mA
10 A
25 A
Bond lead null
ALTERNATIVE LEAKAGE TESTS
Subtitute
Differential
Touch current
OPERATION TEST
VA Measurement
EXTENSION LEAD TESTS
Earth bond
Insulation
Polarity
Portable RCD tests
FLASH TEST
1.5 kV and 3 kV
OTHER FEATURES
Low-profile light weight
Auto test routine
Manual testing
Fuse check
Colour display
Configurable tests times
Selectable pass limits
Lead storage pouch
10,000 record on-board storage
Download to USB memory stick
PowerSuite compatible

Electrical supply range
PAT420	230 V ± 10% @ 50/60 Hz
	±10% @ 50/60 HZ
Bond test (10 A and 25 A)
Open circuit voltage:	9 V a.c. ± 10% ± 0.1 V
	(Supply: 230 V 50Hz)
Earth bond resistance accuracy:
	±5% ±3 digits (0 to 0.49 Ω)
	±5% ±5 digits 0.5 to .99 Ω)
Earth bond resistance resolution:	10 mΩ (0 to 1.99 Ω)
Display range:	0 to 1.99 Ω
Continuity test (200 mA)
Continuity test voltage:	4.0 V d.c. -0% +10%
Continuity resistance accuracy:	±5% ±3 digits (0 to 0.49 Ω)
	±5% ±5 digits 0.5 to .99 Ω)
Continuity resistance resolution:	10 mΩ (1 to 19.99 Ω)
Display range:	0 to 19.99 Ω
Insulation test (250 V and 500 V)
Insulation resistance accuracy (230 V):	±2% ±5 digits (0 to 19.99 MΩ)
	±5% ±10 digits (20 to 99.99 MΩ)
Insulation resistance resolution:	0.01 MΩ
Display range:	0 to 99.99 MΩ
Substitute leakage test
Test voltage and frequency:	40 V a.c. ±10% nominal mains frequency
Leakage current accuracy:	±5% ±5 digits
Leakage current resolution:	0.01 mA
Display range:	0 to 19.99 mA
Differential leakage current
Test voltage and frequency:	Nominal mains supply
Differential leakage current accuracy:	±5% ±5 digits
Differential leakage current resolution:	0.01 mA
Display range:	0 to 19.99 mA
Touch current test
Test voltage and frequency:	Nominal mains supply
Touch current accuracy:	±5% ±5 digits
Touch current resolution:	0.01 mA
Display:	0 to 10 mA
Operational test
Test voltage and frequency:	Nominal mains supply
VA rating:	230 V 3700 VA
VA accuracy:	±5% ±10 digits (0 - 99 VA)
	±5% ±50 digits (100 VA - 999 VA)
	±5% ±100 digits (1000 VA - 3700 VA)
Resolution:	1 VA (0 to 3700 VA)
Display range:	0 to 3990 VA
Extension lead test
Tests performed:	Bond, insulation and polarity
Polarity test voltage:	12 V
Polarity checks:	Lead OK
	Live neutral S/C
	Live neutral reversed
	Live/neutral O/C