PORTABLE APPLIANCE TESTERS
MEGGER
廬
PAT32
鈥?Wide applications,
including the testing of
Information Technology
(IT) equipment
鈥?Easy to use 鈥?with
range sensitive
passbands displayed
鈥?Analogue/Digital
display 鈥?accurate
digital readings and
rapid response
analogue display high-
lighting 鏗倁ctuations
Portable Appliance Tester
DESCRIPTION
The MEGGER
廬
PAT32 Portable
Appliance Tester will perform the
basic electrical safety tests required
for
portable
appliances
and
equipment. It can be used to test
Information Technology (IT) equip-
ment, domestic appliances, industrial
appliances and power tools.
It performs seven tests on an
appliance:
instructions are attached to the inside
of the lid for quick reference.
The ELT1 accessory allows extension
leads both 110 V, 240 V and IEC mains
leads to be tested. It performs Lead
Polarity, Earth Bond and Insulation
Tests.
TEST SEQUENCE
The tests should be performed in the
correct order 鈥?starting with the
CIRCUIT test. This applies a low
voltage across the appliance and
checks the d.c. resistance, live to
neutral ensuring the relevance of
subsequent tests.
FUSE CHECK can be used to check
any suspect fuse by placing it on the
contacts.
The EARTH CONTINUITY test is a low
current test which is used where a
higher current Earth Bond test may
cause damage to the appliance.
The EARTH BOND test is used for
earthed or Class I appliances only
and is designed to test the earth lead
continuity and the earth bonding to
the metal casing of an appliance. The
crocodile clip lead supplied with the
instrument is connected between the
EARTH BOND terminal and the
appliance鈥檚 casing. A choice of two
test current levels is provided, 25 A
and 10 A. The latter is for use on
appliances with light duty cables.
The 鏗乶al test is an insulation test
required for both earthed and double
insulated appliances. For earthed
appliances, a test voltage of 500 V d.c.
is established between the mains
supply plug live and neutral pins
joined together and the earth pin.
No additional connection is required.
For double insulated appliances, the
test voltage is established between
the mains supply plug live and neutral
pins joined together and earth (which,
in this case, is taken to the crocodile
clip test lead attached to the EARTH
BOND terminal). The clip is attached
to the case of the appliance and the
test is then performed.
APPLICATIONS
The PAT32 will check the electrical
safety of the earthed appliances (BS
and IEC Safety Class I) and double
insulated appliances (BS and IEC
Safety Class II), symbol
.
Spheres of use for the PAT32 are:
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Circuit test
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Fuse check
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Earth continuity test
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10 A Earth Bond
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25 A Earth Bond
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Insulation test
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Extension leads (ELT1 required)
The PAT32 will test appliances and
tools rated at 240 V and 110 V a.c.
since it is 鏗乼ted with both BS 1363
and BS 4343/CEE17 appliance test
sockets.
The tests are effected by pressing the
relevant test switch. The readings
from each test are shown on a unique
analogue/digital display. The scales
for Earth Bond and Insulation are
marked with pass bands. This
provides a rapid indication of a test
pass or failure and allows proper test
results to be kept. These records are
necessary as part of the appliance鈥檚
safety monitoring programme.
The instrument is robust, reliable and
constructed in a strong plastic case
with a moulded carrying handle and a
detachable lid. Simple diagrammatic
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Periodic tests of equipment used in
factories, of鏗乧es, local education
authorities, hospitals, etc.
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Routine tests before and after hiring
electrical equipment.
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Basic tests following equipment
repair.
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Tests by manufacturers and
distributors.
The instrument may be used to test
equipment originally manufactured
to a range of speci鏗乧ations including:
BS 3456/IEC 335-1, BS 2769, BS 4533,
BS 415 and BS 7002.
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