R90 - 160N / R90 - 160I / R90 - 160NE / R90 - 160IE
http://www.ingersollrandproducts.com
1
7.0 INSTALLATION
CAUTION
VERY IMPORTANT
(For VSD only)
Supply voltage must be kept to a maximum imbalance of 3%. Voltage imbalances greater than these levels
can cause permanent damage to the drive.
Compressor must not be subjected to significant voltage spikes or surges. Exposure to spikes/surges in excess
of 780V peak for 380-460Vac applications (980V peak for 575Vac applications) can permanently damage the
drive. If the possibility of such exists it is recommended that adequate surge protection is fitted. See your
local Ingersoll Rand representative.
Failure of the drive due to voltage spikes, line notching, harmonics or other power quality related problems,
will not be covered by the standard compressor warranty.
The correct type and rating of line input fuse MUST BE fitted onto the customers isolator or breaker close to
the compressor. For Amp rating see technical information in Section 8.1.
Product Identification
Class - J or
Semiconductor TYPE JFH22
Fuse Type
Fast Acting Class-J or Semiconductor type JFHR2,
Current limiting, Interrupt Rating - 200,000 Amps
RMS SYM.
Alternate fuse may be used if the time current
characteristics are faster than fuses recommended
in this section.
See your local
Ingersoll Rand
representative for a range of fuses and disconnect isolators matched to your particular
machine.
Example of voltage imbalance calculation (VSD)
U
→
V 462v
V
→
W 459v
W
→
U 453v
V(m) = (462 + 459 + 453) / 3 = 458v
VΔ max = 462 − 453 = 9v
... = (9 / 458) x 100 = 1.97%