7.0 INSTALLATION
caution
VERY IMPORTANT
Supply voltage must be kept to a maximum imbalance of 2% on 50Hz and 3% on 60Hz applications. Voltage imbalances greater than these levels can cause permanent damage to the drive.
Compressor must not be subjected to any voltage spikes or surges in excess of 575V. Exposure to spikes/surg- es in excess of 575V can permanently damage the drive. If the possibility of such exists it is recommended that adequate surge protection is fitted such as an Ingersoll Rand line reactor. 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, Class − T, or Semiconductor
Fuse Type | Fast Acting Class−J, T or Semiconductor type, |
| 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
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%
22IRN37 - 160K - CC & IRN50 - 200H
http://air.irco.com
