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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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| The 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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