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3. Electrical Connections
• The periodic overvoltage on the TVD 1.3 between a phase (1U1, 1V1, 1W1,
Overvoltages
2U1, 2V1, 2W1) and the housing may not exceed 1000 V (peak value).
• Non-periodic overvoltages, as per VDE 0160, between the phases and the
phases and the housing are permissible for the TVD 1.3 as depicted in the
diagram below.
U N +∆U
3
2.6
2.4
2.3
2.2
2
1.8
1.6
1.4
1.2
1.15
1.1
1
0.1
Fig. 3.8: Permissible non-periodic overvoltages as per VDE 0160
The TVD 1.3 can be connected to 3 x 480 V.
This means that the maximum permissible overvoltage equals:
• DOK-POWER*-TVD*1.3****-ANW1-EN-E1,44 • 02.97
U N
0.2
0.4 0.6
1 1.3
2
√
480 V x
2 • 2.3 = 1560 V
4
6
10
20
T (ms)
T
DGUespg
22
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