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Application
The voltage detection system ( VDS ) is used in medium voltage
switchgears. The detection system is standardized according to IEC
61243 (VDE 0682 part 415 ). These systems are used to detect the
voltage situation and to compare the phases in medium voltage
switchgears with HR-System.
General Description
The
voltage detection system with a panel-mounted reading instrument
consists of 4 elements:
1. capacitive insulator / lead-in with capacitive pick-up
2. connection cables
3. capacitive voltage ledge
4. reading instrument
Figure 1 shows how the components interact. |
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1 live part of the switchgear
2 test-system
3 coupling
4 voltage indicator
5 coupling dielectric
6 coupling electrode
7 terminal of the couplingelectrode
8 ports with sockets
9 connection cables
10 seperation point (voltage-limiting)
11 measuring circuit component
12 strew capacitance
15 short circuit device (optional ) |
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coupling electrode (6) capacitively picks up the voltage, which is then
transmitted to the measuring point (8). Overvoltage arresters (10) are
installed to protect the system. A balancing capacitor (11) limits the
voltage respectively the current at the measuring point. |
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| Delivery
Content |
| 1. |
complete system
consists of:
3 pcs capacitive insulator
3 pcs. connection cable
1 pcs. capacitive voltage ledge *
optional 1 pcs. voltage indication instrument
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| 2. |
subsystem 1 ( in case measuring
points exist )
3 pcs. capacitive insulator
3 pcs. connection cable
3 pcs. overvoltage arrester
3pcs. adapter
optional 1 pcs. voltage indication instrument
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| 3. |
subsystem 2 ( in case lead-ins
and connection cables exist )
1 pcs. capacitive voltage ledge*
optional 1 pcs voltage indication instrument
(* the capacitive voltage ledge is also available with 3 integrated
voltage indicators) |
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