Briggs & Stratton 252700 Especificaciones descargar pdf (Pagina 6)

NOTE: Metal cased rectiers must also be tested

for “grounds”, as follows:

With BLACK test lead probe contacting rectier

case, touch each terminal, A – D, with RED test lead

probe. Meter should display “OL” at each terminal.

If meter makes a continuous tone at any terminal,

rectier is defective (“grounded”).

120 Volt Rectier

RED TEST LEAD BLACK TEST LEAD BEEP

B A Yes

C B Yes

C D Yes

D A Yes

DC SHUNT

Have you ever wanted one tool in your toolbox that

would make your life so much easier that it would

pay for itself after the rst couple of uses? That tool

might well be the 19359 DC shunt. The DC shunt

is a device that enables the technician to make

several electrical tests with only one hook‑up to the

equipment. By using the DC shunt, we can test for

system draw with the key switch off, system draw

with the key switch on, starter peak amp and steady

amp draw, and alternator charging. All of these tests

can be done in about 30 seconds taking all the guess

work out of the process.

Electricity is one of those mysterious entities that

most of us are at best, very leery of or at worst,

down right frightened of. But once we have a basic

understanding of electrical theory, and acknowledge

that electricity has to follow strict physical properties,

electrical testing becomes one of the easiest

troubleshooting problems we will encounter.

HOW DOES A SHUNT WORK?

Several years ago we introduced the 19359 DC Shunt as a complement to the Fluke Digital Multi‑meter.

Though a very effective and useful tool, two questions usually come up:

Why is a reading taken in millivolts to read amperage?

Can I use the shunt with another brand of meter?

The shunt works by adding a measured load (resistance) to a DC series circuit. Any load in a circuit will cause

a voltage drop across that particular part of the total load. The two meter connecting posts are across part of

the total load. The load in this case is the resistance to the ow of electrons through the shunt body between

the posts. The meter must be set to the millivolt scale in order to obtain the correct reading. This is actually

a much safer approach than working with higher amperage.

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