160
Insulation resistance
-
The measuring voltage value shown on the measuring device must be at least the
same as the rated voltage to earth of the device to be tested, however it must be no
less than 500 V DC voltage.
-
The measuring current must be at least 1 mA (this corresponds to a load resistance
of 0.5 M
).
Ground conductor current
-
The effective inner resistance of the ground conductor measuring device must not ex-
ceed 5
. In the event of higher resistances, measures must be adopted to prevent
dangerous contact voltages.
-
The measuring range must cover at least 0.25 mA to 19 mA.
-
The testing equipment must evaluate the measured current as an effective value re-
gardless of the curve form.
Contact current
-
The effective inner resistance of the contact current measuring device must be 1 k
to 2 k
.
-
Should the current measuring circuit be inadvertently connected to a voltage up to
120% of the nominal grid voltage, the user must not be put at risk and the testing circuit
must not be damaged.
-
The testing equipment must evaluate the measured current as an effective value re-
gardless of the curve form.
Summary of Contents for 10.0-3 480
Page 2: ...2 ...
Page 5: ...Allgemeine Informationen ...
Page 6: ......
Page 13: ...Fehler Suchhilfe ...
Page 14: ......
Page 33: ...Komponenten austauschen ...
Page 34: ......
Page 40: ...40 Gewindebuchsen in der Grundscha le tauschen 1 2 3 4 5 1 2 3 4 5 ...
Page 41: ...41 DE 6 6 ...
Page 73: ...Sicherheitstechnische Überprüfung ...
Page 74: ......
Page 86: ...86 ...
Page 89: ...General information ...
Page 90: ......
Page 97: ...Error location aid ...
Page 98: ......
Page 116: ...116 ...
Page 117: ...Changing components ...
Page 118: ......
Page 124: ...124 Replacing thread ed bushings in the base shell 1 2 3 4 5 1 2 3 4 5 ...
Page 125: ...125 EN 6 6 ...
Page 156: ...156 ...
Page 157: ...Safety Inspections ...
Page 158: ......
Page 170: ...170 ...
Page 171: ...Appendix ...
Page 176: ...176 Circuit diagrams Fronius Symo ...
Page 177: ...177 Circuit diagrams Fronius 15 0 ...
Page 178: ...178 ...
Page 179: ...179 ...