Company name: Tesla for trading and engineering services

Created by:
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Date: 21/02/2024
Qty. Description
1 LS 350-250-498C ,4F1DBBBQE1 400/4

Note! Product picture may differ from actual product

Product No.: 99763521

Non-self-priming, single-stage centrifugal pump with radial suction and radial discharge port.
Pump for the pumping of thin, clean or slightly contaminated, non-aggressive liquids without abrasive or long-fibred
solids.
The pump has horizontal pump shaft and the housing can be dismantled in the horizontal plane along the drive shaft.

Pump and motor are mounted as separate units on a common baseframe and connected via a flexible coupling.
The impeller is hydraulically as well as dynamically balanced.
Complete unit consists of pump, baseframe, coupling guard and electric motor.

Liquid:
Pumped liquid: Water
Liquid temperature range: 0 .. 100 °C
Selected liquid temperature: 20 °C
Density: 998.2 kg/m³

Technical:
Rated flow: 1450 m³/h
Rated head: 72.3 m
Impeller nom: 498 mm
Primary shaft seal: BBQE
Approvals: CE
Curve tolerance: ISO9906:2012 2B
Rotation direc: CW
MinimumContinuousSuctionFlow: 236.3 m³/h
MaximumHead: 47.14 m
HeadRiseToShutOff: 0.00 %
FlowBEP: 991.1 m³/h
FlowRatioBEP: 0.00 %
HeadRatio: 0.00 %
DiameterRatio: 0.00 %
MaximumWorkingPressure: 0.4615 MPa
MaxAllowableSuctionPressureLimit: 0.538 MPa

Materials:
Pump housing: Cast iron
EN 1561 EN-GJL-250
Wear ring: Bronze
Impeller: Silicon bronze
ASTM ASTM B584
Shaft: EN 1.4021
AISI 420
Stainless steel

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 Company name: Tesla for trading and engineering services
Created by:
Phone:

Date: 21/02/2024
Qty. Description
1 Installation:
Range of ambient temperature: -15 .. 40 °C
Maximum operating pressure: 10 bar
Flange standard: DIN
Pump inlet: DN 350
Pump outlet: DN 250
Pressure rating for connection: PN 10
Coupling type: Flexible laminated w/ spacer

Electrical data:
Motor type: 400M
Rated power - P2: 400 kW
Mains frequency: 50 Hz
Rated voltage: 3 x 380-400D/660-690Y V
Rated current: 719-683/414-396 A
Starting current: 700-700 %
Cos phi - power factor: 0.88
Rated speed: 1490 rpm
IE efficiency: IE3 96,0%
IE Efficiency class: IE3
Motor efficiency at full load: 96.0-96.0 %
Motor efficiency at 3/4 load: 96.0-96.0 %
Motor efficiency at 1/2 load: 94.8-94.8 %
Number of poles: 4
Enclosure class (IEC 34-5): 55 (Protect. water jets/dust)
Insulation class (IEC 85): F
Motor No: 99734252

Others:
Net weight: 4470 kg
Gross weight: 4920 kg
Shipping volume: 9.15 m³
Rotation direc: CW

Printed from Grundfos Product Centre [2024.07.003] 2/5

 Company name: Tesla for trading and engineering services
Created by:
Phone:

Date: 21/02/2024
H LS 350-250-498C, 3*400 V, 50Hz eta
Description Value [m] [%]
General information:
LS 350-250-498C 100
Product name: 497.8 mm
,4F1DBBBQE1 400/4
90
Product No: 99763521 463.6 mm
80
EAN number: 5713833949464
Technical: 70 425.5 mm

Rated flow: 1450 m³/h 60 391.2 mm

Rated head: 72.3 m
50 355.6 mm 100
Impeller nom: 498 mm
Primary shaft seal: BBQE 40 80
Approvals: CE 30 60
Curve tolerance: ISO9906:2012 2B
20 40
Pump version: 4
Cooling: IC 411 10 20
Rotation direc: CW 0 0
Minimum continous suction flow: 236.3 m³/h 0 500 1,000 1,500 2,000 Q [m³/h]

Maximum head, actual impeller 47.14 m Variable speed needs fixed impeller diameter
diameter: Pumped liquid = Water
Liquid temperature during operation = 20 °C
Head rise to shut off: 0.00 % Density = 998.2 kg/m³
Flow, best efficiency point (BEP): 991.1 m³/h P2 NPSH
[kW] [m]
Flow ratio (calculated/BEP): 0.00 %
400 40
Head ratio (resulting/max. 0.00 %
diameter):
Diameter ratio (actual/max.): 0.00 % 300 30
Maximum working pressure: 0.4615 MPa
Maximum allowable suction 0.538 MPa 200 20
pressure limit:
Materials:
100 10
Pump housing: Cast iron
Pump housing: EN 1561 EN-GJL-250
Wear ring: Bronze 0 0
Impeller: Silicon bronze
Impeller: ASTM ASTM B584
Material code: DB
Shaft: EN 1.4021
Shaft: AISI 420
Shaft: Stainless steel
Installation:
Range of ambient temperature: -15 .. 40 °C
Maximum operating pressure: 10 bar
Flange standard: DIN
Pump inlet: DN 350
Pump outlet: DN 250
Pressure rating for connection: PN 10
Coupling type: Flexible laminated w/ spacer
Connect code: F1
Liquid:
Pumped liquid: Water
Liquid temperature range: 0 .. 100 °C
Selected liquid temperature: 20 °C
Density: 998.2 kg/m³
Electrical data:
Motor type: 400M
Rated power - P2: 400 kW
Mains frequency: 50 Hz
Rated voltage: 3 x 380-400D/660-690Y V
Rated current: 719-683/414-396 A
Starting current: 700-700 %
Cos phi - power factor: 0.88

Printed from Grundfos Product Centre [2024.07.003] 3/5

 Company name: Tesla for trading and engineering services
Created by:
Phone:

Date: 21/02/2024

Description Value
Rated speed: 1490 rpm
IE efficiency: IE3 96,0%
IE Efficiency class: IE3
Motor efficiency at full load: 96.0-96.0 %
Motor efficiency at 3/4 load: 96.0-96.0 %
Motor efficiency at 1/2 load: 94.8-94.8 %
Number of poles: 4
Enclosure class (IEC 34-5): 55 (Protect. water jets/dust)
Insulation class (IEC 85): F
Built-in motor protection: PTC
Motor No: 99734252
Others:
Net weight: 4470 kg
Gross weight: 4920 kg
Shipping volume: 9.15 m³
Sales region: China
Rotation direc: CW

Printed from Grundfos Product Centre [2024.07.003] 4/5

 Company name: Tesla for trading and engineering services
Created by:
Phone:

Date: 21/02/2024

99763521 LS 350-250-498C ,4F1DBBBQE1 400/4 50 Hz

+T +T +T

CONNECTED TO AMPLIFIER RELAY FOR CONTROL OF MAIN SUPPLY

IEC TP211 THERMALLY PROTECTED WHEN THE THERMISTORS ARE
TO AMPLIFIER
RELAY
L1 L2 L3

THERMISTORS PTC ACCORDING TO DIN 44082

+T +T +T

TO AMPLIFIER
RELAY
L1 L2 L3

Note! All units are in [mm] unless others are stated.

Printed from Grundfos Product Centre [2024.07.003] 5/5