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The electrodes are connected 175-VA(/50-Hz source (practically
sinusoidal). The drop volume ±5-mm3. The entire
width both rounded edges must contact the test object.0 ±0.
A revision this testing method pending.
Each electrode exerts force approx.
Two electrodes, made sintered Wolfram carbide another sufficiently
corrosion-proof material and whose dimensions comply with Fig.
There may breakdowns sparkovers between the electrodes before a
total drops have been applied.
Non-ceramic materials are tested specified below. The solution is
dropped from height mm. When the electrodes are short-circuited, the total impedance of
the circuit adjusted variable resistor for current 1. 4.
.
The electrodes must clean, properly rounded and properly positioned at
the start every test.
This test not performed with equipment rated nominal voltages V
or less.Insert 179
(Extract from the CEE Publication 17, dated 1958)
The insulating material components containing voltage-carrying parts
must resistant creepage current.1%. the results are doubtful, the test must repeated
with new set test objects.9 The circuit includes overcurrent relay that has a
minimum triggering delay 0.5 seconds.215, are
placed the surface the test object, shown this figure.
A flat surface the test object with area least (if
possible) placed horizontal position. the surface.1 A,
for cos 0.
The surface the test object moistened between the two electrodes with
drops solution ammonium chloride and distilled water. The solution’s
volume resistivity 400 ohms 25° This equivalent a
concentration approx 0.
The interval between the drops seconds
