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4.1 A,
for cos 0.
There may breakdowns sparkovers between the electrodes before a
total drops have been applied.1%.
.
The interval between the drops seconds.
This test not performed with equipment rated nominal voltages V
or less.
A revision this testing method pending.215, are
placed the surface the test object, shown this figure. the surface. The drop volume ±5-mm3.
The electrodes must clean, properly rounded and properly positioned at
the start every test.
The electrodes are connected 175-VA(/50-Hz source (practically
sinusoidal). The entire
width both rounded edges must contact the test object. The solution’s
volume resistivity 400 ohms 25° This equivalent a
concentration approx 0.9 The circuit includes overcurrent relay that has a
minimum triggering delay 0.0 ±0. When the electrodes are short-circuited, the total impedance of
the circuit adjusted variable resistor for current 1.Insert 179
(Extract from the CEE Publication 17, dated 1958)
The insulating material components containing voltage-carrying parts
must resistant creepage current. the results are doubtful, the test must repeated
with new set test objects.
Two electrodes, made sintered Wolfram carbide another sufficiently
corrosion-proof material and whose dimensions comply with Fig.
The surface the test object moistened between the two electrodes with
drops solution ammonium chloride and distilled water.5 seconds. The solution is
dropped from height mm.
Non-ceramic materials are tested specified below.
Each electrode exerts force approx.
A flat surface the test object with area least (if
possible) placed horizontal position
