Vertiv Liebert XDU 060, Инструкция по установке и эксплуатации

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7.3 Electrical Field Connections
The electrical connections are described in the submittal documents included in the Submittal Drawings on page 59.
The following table lists the relevant documents by number and title.
Document Number Title
DPN004935 Electrical Field Connections Descriptions 60 kW, 600 mm (24 in.) Models
Table 7.1 Electrical Field Connection Drawings
7.4 Protective Features of the Electronically Commutated (EC) Fans—All Models
The EC fans are protected against:
• Over temperature of electronics
• Over temperature of motor
• Locked rotor protection
• Short circuit at the motor output
When any of these failures occurs, the motor stops electronically, with no potential for separation, and the status relay is
released.
The unit does not restart automatically. To reset the alarm, the power supply must be switched Off for 20 minutes once
motor is at standstill.
• Input power under voltage detection:
If the utility power falls below the trip value of the below table (typical value) for five seconds or longer, the
motor is switched Off electronically, with no potential for separation, and the status relay is released.
When the utility voltage returns to a correct value, the motor restarts automatically.
Unit Input Power Fan Undervoltage Trip
208 VAC < 143 VAC
• Phase failure recognition:
If one phase fails for five seconds or longer, the motor is switched Off electronically, with no potential for
separation and the status relay is released.
When all three phases return to correct values, the motor restarts automatically in 10 to 40 seconds.
The power supply for an external speed setting potentiometer is protected against short circuiting.
The motor is overload protected via motor current limitation.
Vertiv | XDU™ Liquid to Air Heat Exchanger for Chip Cooling
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