Huawei NetCol5000-A025 - Page 34

Item Specications
Power supply Leakage switches are not recommended for the main
circuit. If leakage switches are required by the customer
or local regulations, use the residual current circuit
breaker (RCCB) that is insensitive to the single-phase
DC pulses and transient current pulses
Note: If some conditions are not met, contact Huawei technical support.
Water Quality Requirements for Wet Film Humidiers
The inlet water pressure should be in the range of 0.1–0.7 MPa (A reducing valve
must be installed if the inlet water pressure exceeds 0.7 MPa.), and the
temperature should be in the range of 1°C–40°C.
The wet
lm humidier should use tap water (no water treatment facility needed
for the inlet water) that meets the following requirements:
● Non-freezing and nephelometric turbidity units (NTU): < 3
● No visible substances
● 6.5 ≤ pH value ≤ 8.5
● Total hardness (in CaCO
3
): ≤ 450 mg/L
Water Quality Requirements for Electrode
Humidiers
NO TICE
If the inlet water contains large granules, install a water ltering device at the
inlet port to prevent pipe blockage.
The inlet water pressure should be in the range of 0.1–0.7 MPa (A reducing valve
must be installed if the inlet water pressure exceeds 0.7 MPa.), and the
temperature should be in the range of 1°C–40°C.
Table 2-7 Water quality requirements for electrode
humidiers
Item
Requirement Unit
Hydrogen ion 7–8.5 pH
Conductivity at 20°C
(σ
20
)
a
125–1250 µS/cm
Inlet water hardness
specications
b
≤ 100 mg/L
NetCol5000-A025 In-row Air Cooled Smart Cooling
Product
User Manual (300 mm Width) 2 Product Description
Issue 15 (2020-12-10) Copyright © Huawei Technologies Co., Ltd. 24