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9 The circuit includes overcurrent relay that has a
minimum triggering delay 0.
The interval between the drops seconds.
A flat surface the test object with area least (if
possible) placed horizontal position.
The electrodes must clean, properly rounded and properly positioned at
the start every test.Insert 179
(Extract from the CEE Publication 17, dated 1958)
The insulating material components containing voltage-carrying parts
must resistant creepage current. 4.
There may breakdowns sparkovers between the electrodes before a
total drops have been applied.
The electrodes are connected 175-VA(/50-Hz source (practically
sinusoidal).
Two electrodes, made sintered Wolfram carbide another sufficiently
corrosion-proof material and whose dimensions comply with Fig. The solution’s
volume resistivity 400 ohms 25° This equivalent a
concentration approx 0.
The surface the test object moistened between the two electrodes with
drops solution ammonium chloride and distilled water.1 A,
for cos 0. The entire
width both rounded edges must contact the test object.5 seconds.0 ±0.1%.
.215, are
placed the surface the test object, shown this figure. The solution is
dropped from height mm.
Each electrode exerts force approx. the results are doubtful, the test must repeated
with new set test objects. When the electrodes are short-circuited, the total impedance of
the circuit adjusted variable resistor for current 1.
A revision this testing method pending. The drop volume ±5-mm3. the surface.
Non-ceramic materials are tested specified below.
This test not performed with equipment rated nominal voltages V
or less
