Genesis GEN3t, Руководство пользователя

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CAT IV : This category is for measurements directly connected to the source of
a low voltage mains installation. Measurements for this category are
overcurrent protection devices, ripple control units, etc. This category expects
that there is a minimum of one level of overcurrent protection between the
transformer and connection point of the measurement circuit. (See Figure 2.1).
Figure 2.1: Category indication in accordance with IEC 61010
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2
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030:2010
Example: A measurement device is specified as 600 V CAT II, maximum input
voltage 1000 V DC.
Table 2.1: Insulation test voltages in accordance with IEC 61010
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2
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030:2010
Nominal Voltage
(V RMS or V DC)
IEC 61010
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2
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030:2010
5 sec. AC test (V RMS) Impulse test (V)
CAT II CAT III CAT IV CAT II CAT III CAT IV
≤ 150 840 1390 2210 1550 2500 4000
> 150 ≤ 300 1390 2210 3310 2500 4000 6000
> 300 ≤ 600 2210 3310 4260 4000 6000 8000
> 600 ≤ 1 000 3310 4260 6600 6000 8000 12000
Using the table above, it can be concluded that this specification informs the
user that the device passed the insulation tests; 5 sec at 2210 V RMS and
impulse 4000 V. The maximum operating input voltage is 1000 V DC. This
device is to be used to measure CAT II circuitry up to 600 V.
GEN3t
I3995-3.1 en HBM: public 29