ปั๊มหอยโข่ง EBARA ชนิดใบพัดเดี่ยว รุ่น:CM (A-B-C-D)

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ปั๊มหอยโข่ง EBARA ชนิดใบพัดเดี่ยว รุ่น:CM (A-B-C-D)

PERFORMANCE CURVE SPECIFICATIONS
The specifications below qualify the curves shown on the following pages.
Tolerances according to ISO 9906 Annex A
The curves refer to effective speed of asynchronous motors at 50 Hz
Measurements were carried out with clean water at 20°C of temperature and with a kinematic viscosity
of  = 1 mm2
/s (1 cSt)
In order to avoid the risk of over-heating, the pumps should not be used at a flow rate below 10% of best
efficiency point.
Symbols explanation:
Q = volume flow rate
H = total head
P2 = pump power input (shaft power)
 = pump efficiency
MEI = minimum efficiency index
The minimun efficiency index (MEI) is a measure of the quality of a pump size in respect to its mean
efficiency. The minimum efficiency index is based on the hydraulic efficiency and on the head at the best
efficiency point.
The efficiency of a pump with trimmed impeller is usually lower than that of a pump with the full impeller
diameter. The trimming of the impeller will adapt the pump to a fixed duty point, leading to reduced
energy consumption. The minimum efficiency index (MEI) is based on the full impeller diameter.
The operation of these water pumps with variabile duty points may be more efficient end economic when
controlled, for example, by the use of a variable speed drive that matches the pump duty to the system.

ปั๊มหอยโข่ง EBARA ชนิดใบพัดเดี่ยว รุ่น:CM (A-B-C-D)

PUMP
Liquid Type of liquid Clean water
Handled Temperature [°C]
min. +5
max. +40 (CMA up to 1.00)
max. +90 (the other)
Maximum working pressure [MPa] 0.6 (CMA up to 1.00 ; CMB up to 3.00; CMC; CMD)
0.8 (the other)
Construction
Impeller Closed centrifugal
Shaft seal type Mechanical seal
Bearing Sealed ball bearing
Pipe
Connection
Suction
G 1” (CMA up to 1.00) UNI ISO 228
G 1”¼ (CMA 1.50 and above) UNI ISO 228
G 2” (CMB – CMC) UNI ISO 228
G 2”½ (CMD ) UNI ISO 228
Discharge
G 1” (CMA) UNI ISO 228
G 1”¼ (CMB) UNI ISO 228
G 2” (CMC) UNI ISO 228
G 2”½ (CMD) UNI ISO 228
Material
Casing Cast iron
Impeller PPE+PS glass fibre reinforced – Brass – Cast iron
see application page 301-303
Shaft seal Ceramic/Carbon/NBR
Shaft AISI 303 (wet extension)
AISI 304 (wet extension) see application page 301-303
Bracket Cast iron – Aluminium see application page 301-303
Casing cover AISI 304 see application page 301-303
Applicable standard of test ISO 9906 – Annex A
MOTOR
Type Electric – TEFC
Single Phase Three Phase
Efficiency level (Reg. 1781/2019) IE2 IE3
No. Of Poles 2
Rotation speed [min-1] ≈ 2800
Insulation Class F
Protection degree (CEI EN 60034-5) IP 44
Power rating [kW] 0.37 ÷ 1.5 0.37 ÷ 4
[HP] 0.5 ÷ 2 0.5 ÷ 5.5
Frequency [Hz] 50
Voltage [V] 230 ±10% 230/400 ±10%
Capacitor Built in –
Over load protection Built in Provided by the user
Casing material Aluminium
Base material / motor support Aluminium / Cast iron / Plastic foot
Dimensions of cable entry PG11 – PG13.5 – PG16 – M16x1.5 – M20x1.5
(see dimensions page 401)