Ground Leakage - Emerson E300 Installation And Commissioning Manual

Safety Product
information information
Table 4-18 Braking resistor resistance and power rating (690 V)
Model
07600190
07600240
07600290
07600380
07600440
07600540
* 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
See section 4.3 Power connections 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 Internal EMC filter on page 31.
With internal filter installed:
Size 3 to 5:
Size 7 to 10:
* Proportional to the supply voltage and frequency.
With internal filter removed:
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
78
Mechanical Electrical
installation installation
Minimum resistance *
Ω
11.5
Main contactor
power supply
Start /
Reset
28 mA* AC at 400 V 50 Hz
30 µA DC with a 600 V DC bus (10 MΩ)
56 mA* AC at 400 V 50 Hz
18 µA DC with a 600 V DC bus (33 MΩ)
<1 mA
Getting
User Menu A Commissioning
started
Instantaneous power rating
kW
121.2
Optional
EMC
filter
Drive
Stop
Thermal
protection
device
+DC
BR
Braking resistor
Optimization
Continuous
power rating
kW
20.6
23.9
32.5
41.5
47.8
60.5
E300 Installation and Commissioning Guide
Diagnostics
Issue Number: 1