Power Supplied By Dedicated Transformer Or Generator; Control Power Transformer Connections - Ingersoll Rand R30 Información Del Producto

93014.15.06
Disconnect the two EMC fi lters if the electrical power system is:
• ungrounded (fl oating)
• a high-resistance ground system (greater than 30 ohms)
• a corner- grounded delta system.
Do not try to install or remove the EMC fi lters and jumpers while
power is applied to the compressors input terminals.
If you disconnect the internal EMC fi lters, the variable speed drive
does not agree to the European requirements for Electro-Magnetic
Compatibility. If you operate the compressor without the EMC fi lters,
the compressor can cause unwanted interference with electronic
devices. You can continue to operate the compressor without the EMC
fi lters only if Electro-Magnetic Compatibility is not necessary in your
area.
You must remove the two jumpers (For R37e-160 kW only). One
jumper is in the MOV/EMC metal box at the bottom of the compressor.
The other jumper is on the Printed Circuit Board (PCB) found on the
input buss bars to the drive.
Figure 5 : Location of Second Jumper
The machine may not meet EMC requirement for connecting to a
mains network that is shared with domestic premises. If connection to
mains that are shared by other buildings for domestic use is required,
an additional EMC fi lter may be required.
80447162 Rev B
WARNING
NOTICE
NOTICE
Figure 4 : Location of First Jumper
A – First jumper
A – Power
interface board
(located
underneath)
B – DC Bus sensing
board
C – Control board
D – EMC board
E – Cooling fan
F – Second jumper
NOTICE


Power Supplied By Dedicated Transformer or Generator

High Impedance Power Source
The compressor can operate in industrial electrical networks that have
a short-circuit power 15 times greater than the rated power of the drive
(line impedance less than seven percent). Make sure that the network is
correct if you operate the compressor on a generator set or on a dedicated
transformer.
We recommend that you open the link that connects the Electro-Magnetic
Compatibility fi lter capacitors to the ground point if the installation has the
following characteristics:
• the distribution power network has no connection to ground and
• the short-circuit current at the drive connection point and its rated
current has a ratio lower than 30.
Low Impedance Power Source
The variable speed drive can experience low impedance if the installation has
the following characteristics:
• the compressor is installed near to the medium voltage/low voltage
(MV/LV) power supply transformer, and
• a bank of power factor correction capacitors are connected in parallel at
the secondary side of the transformer.
The risk of a high voltage surge at the equipment terminals is high in the
condition that the voltage decrease > at the primary side of the transformer.
Example of line impedance calculation in percent
For a compressor with a rated input current of 100 amps and a line power
supply with short-circuit current capacity of 5000 amps, the line impedance is
two percent (100 A/5000 A).


Control Power Transformer Connections

The control circuit transformer has diff erent voltage primary taps for diff erent
power line voltage levels. Make sure that the taps are set for the correct
applied voltage before you start the compressor.
Figure 6 : Control Power Transformer Connections
EN
EN-7