Manual - TC.P Quadro
Safety and hazards
2016-08-05
11/330
V04.52
1
c)
Work on live equipment
It is imperative this form of working is avoided. If it cannot be avoid-
ed, careful work preparation is essential.
Pay attention to the following:
1. The personnel must be specially trained.
(see NIV Art 26 )
2. Work in accordance with recognised specialist methods.
3. Controlled personal protective equipment must be available.
(passive protection)
4. Organisation of the working area.
5. Supervision and preparatory measures.
(active protection)
6. Use appropriate protection against physical contact throughout.
Set up a suitable EMERGENCY STOP chain and test it at regu-
lar intervals!
Mark all wires and cables to prevent mistakes.
Electrical heating
TopCon electrical power supply systems operate with significant
amounts of energy. High currents can cause heating of cables and
wires. In particular, during unmonitored endurance tests insulation fires
and short-circuits may be caused.
At particular risk are connectors, switchgear and cable terminals.
Check these parts particularly carefully and at regular intervals.
Use wiring material suitable and stipulated for your application
with the related insulation class!
Monitor your system actively or passively using appropriate sen-
sors or by monitoring parameters.
Arcing and sparking on opening contacts
In relation to DC systems, note that on opening a circuit through which
a current is flowing, arcing with very high energies can be produced de-
pending on the inductance!
In some circumstances this arcing can result in burns, damage to the
eyes as well as damage, destruction or fire on parts of the system.
The usage of normal mains contactors as isolating devices in DC cir-
cuits is not recommended! Instead use DC contactors. In case of doubt
contact the related manufacturer.
Take into consideration that the protective devices on the TopCon low-
voltage system cannot detect an arc as a fault condition, as this situa-
tion may be a required function.
