78
E300 Installation and Commissioning Guide
Issue Number: 1
Table 4-18 Braking resistor resistance and power rating (690 V)
* Resistor tolerance: ±10 %
Thermal protection circuit for the braking resistor
The thermal protection circuit must disconnect the AC supply from the drive if the resistor becomes overloaded due to a fault. Figure 4-30 shows a
typical circuit arrangement.
Figure 4-30 Typical protection circuit for a braking resistor
on page 42 for the location of the +DC and braking resistor connections.
4.15 Ground leakage
The ground leakage current depends upon whether the internal EMC filter is installed or not. The drive is supplied with the internal EMC filter
installed. Instructions for removing the internal filter are given in section 3.7.1
With internal filter installed:
Model
Minimum resistance *
Instantaneous power rating
Continuous
power rating
Ω
kW
kW
07600190
11.5
121.2
20.6
07600240
23.9
07600290
32.5
07600380
41.5
07600440
47.8
07600540
60.5
Size 3 to 5:
28 mA* AC at 400 V 50 Hz
30 µA DC with a 600 V DC bus (10 M
Ω
)
Size 7 to 10:
56 mA* AC at 400 V 50 Hz
18 µA DC with a 600 V DC bus (33 M
Ω
)
* Proportional to the supply voltage and frequency.
With internal filter removed:
<1 mA
Optional
EMC
filter
Stop
Start /
Reset
Thermal
protection
device
Braking resistor
Drive
Main contactor
power supply
+DC
BR
When the internal filter is installed the leakage current is high. In this case a permanent fixed ground connection must be provided, or
other suitable measures taken to prevent a safety hazard occurring if the connection is lost.
WARNING
Summary of Contents for E300 Series
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