Connecting Cables; Precautions - Huawei NetCol8000-E220 User Manual

NetCol8000-E220 Modular Indirect Evaporative
Cooling System
User Manual
Pipe Anti-freezing
When the ambient temperature is less than or equal to 0°C, drainpipes and water
refill pipes may freeze and thereby be blocked or crack. Take anti-freezing
measures for the pipes.

4.11 Connecting Cables

4.11.1 Precautions

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Issue 10 (2024-01-30)
Figure 4-30 Setting sealing putty
(1) Paper protective film
NO TE
● Water pipes need to be prepared onsite. If galvanized steel pipes are used, stainless steel
connectors must be used to ensure sealing.
● Ensure that the temperature inside the water pipes is greater than 0°C.
All power cables and ground cables comply with local country standards.
Check the operating current of the unit according to the nameplate or the
electrical diagram provided with the unit. Determine that the cables and
circuit breakers are sufficient to handle the case in which loads are affected
after the unit stops generate cooling for the loads.
The power supply of the unit is consistent with the voltage, phase quantity,
and frequency on the nameplate. The operating voltage of the unit cannot
exceed the rated value ±10%, and the inter-phase imbalance voltage cannot
exceed 2%.
Connect power terminals in the phase sequence of L1, L2, and L3. Check
whether the phase sequence is correct using a phaser or other devices. In
addition, you need to connect one ground cable.
Connect the fan motor to the power supply with an overload protection
device.
Perform electrical tests before startup to check whether safety requirements
are met.
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4 Installation Guide
(2) Sealing putty
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