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• DOK-POWER*-TVD*1.3****-ANW1-EN-E1,44 • 02.97
3. Electrical Connections
3.13. External bleeder resistor
Terminal block: X7/RB1/RB2
To reduce the amount of heat dissipated in the control cabinet, an external
bleeder resistor can be connected. This is installed outside the cabinet, e.g.,
on the rear panel of the cabinet. The bleeder resistor inside the TVD 1.3 is then
inoperative.
The voltage across the resistor can reach 450V DC.
Caution !
Fig. 3.11: Terminal block X7 when operating the TVD 1.3 with an external bleeder
Resistors can be used as indicated in the specification below:
Supply module:
TVD 1.3-08
TVD 1.3-15
Resi/- 5%
R = 10 ohms
R = 5 ohms
Continuous power
P = 1 kW
P = 2 kW
(at 45
0
C ambient
temperature)
Peak power
P
peak
= 20 kW
P
peak
= 40 kW
(for 1.5 s)
Maximum input
power
Umax = 450V
Protection category Depends on installation site!
Q1
L1
L2
L3
1U1
2U1
1V1
2V1
1W1
2W1
1L+
EPU+
2L+
EPU-
RB1
IB
RB2
EB
L1
R1
external
bleeder
DC bus
smoothing
reactor
X7
L2
TVD/X7/3