Circutor Getest, Инструкция по эксплуатации

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GETEST
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2.2.- WHAT SHOULD IT BE USED FOR?
The Getest unit is designed to measure step and contact voltages that may arise in a transformer
substation, substation, etc. It also gives you the option of calculating the approximate earthing
resistance to be tested. .
2.3.- WHERE SHOULD IT BE USED?
The unit is intended to operate in transformer substations, substations and high-voltage lines.
2.4.- UNIT SAFETY
This device can generate voltages that are harmful or even fatal to the human body.
It has built-in protections that reduce the risk of electric shock to a minimum, but
even so, you should take the necessary safety measures.
This instrument can generate deadly voltages. It is essential that the operator takes
safety measures. In the event of risk or device failure, do not hesitate to cancel the
firing sequence.
Ensure that there are no people in the current injection area of influence.
Also ensure that nobody is handling the cables before starting the firing sequence.
The device weighs 45 kg. This weight may be harmful to the user if it is handled by
unqualified people or if it is lifted incorrectly. The instrument has two ergonomic
handles and we recommend it be carried by two people. The device also includes
two electrodes. These weigh 25 kg each. This weight may be harmful if it is not
lifted
If the firing sequence is accidentally started (by pushing the "START" button on the PDA), it may
be cancelled at any time by:
- Pushing the "STOP" button
- Switching the safety switch to the "disabled" position
- Cutting off the Bluetooth link (for example, by removing the PDA's battery or leaving
the coverage area)
- Flipping the circuit breaker switch
The circuit breaker switch and the safety switch are independent devices and they act directly on
the network power supply (switch) or on the output current (security switch). In this way, even in
an unlikely software or hardware failure, these two devices prevent current injection.
If the sequence is not cancelled, the MPC device fires a first shot of 25 V. If the resistance found
is higher than 110
Ω
, a message warns the user, asking if he would like to continue or not. Bearing
in mind that the resistance of the human body in normal conditions is 1 k Ω , this warning is a basic
protection measure.
If the sequence continues, the new MPC will only inject current for 20 ms. According to the IEC
60479-1 standard, the maximum applied voltage should not cause ventricular fibrillation, even