background image

5.2.2 Acoustic noise and voltage peaks

Frequency converter operation may cause increased acoustic noise
from the motor and will often expose the motor insulation system to
a heavier load due to voltage peaks reducing motor life. To prevent
the voltage peaks from damaging the motor, make sure to observe
the limits of IEC 60034-17.
Increased acoustic noise and detrimental voltage peaks can be
eliminated by fitting an output filter between the frequency converter
and the motor. For further details, contact your frequency converter
supplier or Grundfos.
The figure below shows the maximum permissible voltage peaks
measured at the motor terminals for a specific rise time.

0.0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

t [m S]

800

900

1000

1100

1200

1300

1400

[V]

TM044556

Maximum values for voltage peaks

How to eliminate problems with noise

Noise-critical applications:
Fit an output filter between the frequency converter and the
motor. This will reduce the voltage peaks and consequently the
noise.

Particularly noise-critical applications:
Fit a sinusoidal filter. This will reduce the voltage peaks and
optimise the sinusoidal wave of the power supply to the motor.

5.2.3 Cable length

The length of the cable between motor and frequency converter
affects the motor load. Fit a cable that meets the specifications laid
down by the frequency converter supplier.

5.2.4 Speed

Basically, MG motors are not suitable for oversynchronous
operation. Contact Grundfos if oversynchronous operation is
required.
Oversynchronous operation means that the motor runs at a
frequency higher than 60 Hz. This can be achieved by using a
frequency converter.

6. Mechanical installation

The installation must be carried out by authorised persons in
accordance with local regulations.
Check by hand that the shaft rotates freely.

WARNING
Body injury

Death or serious personal injury

If you test the motor without any device fitted to it,
make sure that the key is secured in the shaft keyway,
so that it cannot be ejected when starting the motor.

WARNING
Crushing of feet

Death or serious personal injury

Wear personal protective equipment and attach lifting
equipment to the motor eyebolts when handling the
product.

Keep other persons at a safe distance when handling
the product.

CAUTION
Crushing of feet

Minor or moderate personal injury

Make sure that the eyebolts are secured in position.

6.1 Clearance

To ensure sufficient air circulation, a clearance of minimum 50 mm
must be available over/around the motor.

6.2 Terminal box positions

TM045510

Permissible terminal box positions

In case of vertically installed motors, the terminal box must not fall
more than 10° below the horizontal plane.
Make sure that the motor drain holes are positioned so that
condensed water can escape from the motor.
See the section about drain holes.

Related information

4.2 Drain holes

9

English (GB)

Summary of Contents for MG 100LA2

Page 1: ...MG Installation and operating instructions GRUNDFOS INSTRUCTIONS ...

Page 2: ......

Page 3: ...lation et de fonctionnement 45 Italiano IT Istruzioni di installazione e funzionamento 55 Português PT Instruções de instalação e funcionamento 65 Русский RU Паспорт Руководство по монтажу и эксплуатации 76 Українська UA Інструкції з монтажу та експлуатації 88 中文 CN 安装和使用说明书 98 Appendix A 108 Declaration of conformity 112 Declaration of conformity 114 Declaration of conformity 115 Declaration of c...

Page 4: ...cepted codes of good practice 1 1 Hazard statements The symbols and hazard statements below may appear in Grundfos installation and operating instructions safety instructions and service instructions DANGER Indicates a hazardous situation which if not avoided will result in death or serious personal injury WARNING Indicates a hazardous situation which if not avoided could result in death or seriou...

Page 5: ...a irrespective of frequency The nameplates are positioned on the side of the motor 2 2 2 Type key Both 50 and 60 Hz data are indicated on the nameplates for three phase motors Only 50 or 60 Hz data are indicated on the nameplates for single phase motors Only 60 Hz data are indicated on previous versions of MG motors The type designation is stated on the nameplate Example MG 132 S B 2 38 FF 265 H 3...

Page 6: ...cables The table shows the number of eyebolts and the maximum permissible weight Frame size Model Number of eyebolts max permissible weight 90 100 B C D H 2 x M8 140 kg 1 4 kN 112 132 C D F H 2 x M10 230 kg 2 3 kN 160 180 F H 2 x M12 340 kg 3 4 kN Frame sizes 71 and 80 have no eyebolts 3 2 2 Storage Until installation Grundfos motors should be stored in the packaging in which they were delivered S...

Page 7: ...n the nameplate 4 3 1 Motors with lubricating nipples Frame size 160 and 180 motors have lubricating nipples both in the drive end and the non drive end The bearings are lubricated from factory and should therefore not be lubricated until commissioning The lubricating intervals are stated on the nameplate with mechanical data For information about lubrication and maintenance of bearings see the se...

Page 8: ...nt temperature 65 C Installation altitude above sea level 4750 m Maximum load of the motor Ambient temperature of 65 C 95 4750 m above sea level 88 As both operating conditions apply the motor must not be loaded more than 0 95 0 88 83 6 If the motor load is not reduced in case the ambient tem perature or installation altitude is exceeded the motor life will be limited and the warranty is void Rela...

Page 9: ...frequency converter supplier 5 2 4 Speed Basically MG motors are not suitable for oversynchronous operation Contact Grundfos if oversynchronous operation is required Oversynchronous operation means that the motor runs at a frequency higher than 60 Hz This can be achieved by using a frequency converter 6 Mechanical installation The installation must be carried out by authorised persons in accordanc...

Page 10: ...rating frequency are stated on the motor nameplate Check that the motor is suitable for the power supply available at the installation site The voltage quality for MG motors measured at the motor terminals must be 10 of the rated voltage during continuous operation including variation in the supply voltage and losses in cables WARNING Electric shock Death or serious personal injury The motor must ...

Page 11: ...h or serious personal injury When measuring the insulation resistance carefully follow the safety regulations of EN 50110 1 operation of power plants and the instruction manual for meas uring and test equipment Calculate the minimum permissible insulation resistance R by multiplying the rated voltage in kV of the motor with the constant 0 5 megohm kV Stop using the motor immediately if the insulat...

Page 12: ...ensed water cannot escape The drain hole at the lowest point of the motor can be opened and ensure the escape of water entering the stator housing for example in connection with condensation 10 2 Motor bearings Take care when replacing the motor bearings WARNING Electric shock Death or serious personal injury Do not remove nor move the insulation material if any present inside the motor Do not exp...

Page 13: ... circuit breaker trips occasionally Motor protective circuit breaker set ting is too low Mains voltage periodically too low Voltage asymmetry 12 Technical data 12 1 Weight See nameplate or Grundfos Product Center 12 2 Enclosure class See nameplate or Grundfos Product Center 12 3 Dimensional sketches See A 1 Appendix 12 4 Sound pressure level See Grundfos Product Center 12 5 Winding resistances See...

Page 14: ... 250 MG 71A4 250 MG 71B2 MG 71B4 MG 80A2 MG 80A4 MG 80B2 MG 80B4 MG 90SA2 MG 90SA4 MG 90SB2 MG 90SB4 MG 90LA2 MG 90LA4 MG 90LB2 MG 90LB4 MG 90LC2 MG 90LC4 MG 100LA2 100 MG 100LA4 100 MG 100LC2 MG 100LB4 MG 112MB2 MG 100LC4 MG 112MC2 MG 112MB4 50 MG 132SB2 50 MG 112MC4 MG 132SC2 MG 132MB4 MG 132SD2 MG 132SB4 MG 160MB2 MG 132SC4 MG 160MD2 40 MG 160MB4 MG 160LB2 MG 160LB4 MG 180MB2 108 Appendix A ...

Page 15: ...HD LB AD GA F DB AC T LA N P 4 5 SxZ M B G O AG LL HC E C TM028805 Foot mounted motor with free hole flange IM B 35 Motor with free hole flange IM B5 V1 EB D HA EB BA BB K E C B L A H AB HC AA HD LB AD GA F DB AC B G N P SxZ AG LL O M 4 5 T LA TM028804 Foot mounted motor with tapped hole flange IM B 34 Motor with tapped hole flange IM B14 V18 109 Appendix A ...

Page 16: ...Dimensions 2 pole 110 Appendix A ...

Page 17: ...Dimensions 4 pole 111 Appendix A ...

Page 18: ...y a z MG ML termékek amelyekre az alábbi nyilatkozat vonatkozik megfelelnek az Európai Unió tagállamainak jogi irányelveit összehangoló tanács alábbi előírásainak IT Dichiarazione di conformità UE Grundfos dichiara sotto la sua esclusiva responsabilità che i prodotti MG ML ai quale si riferisce questa dichiarazione sono conformi alle seguenti direttive del Consiglio riguardanti il riavvicinamento ...

Page 19: ...som denne erklæringen gjelder er i samsvar med styrets direktiver om tilnærming av forordninger i EU landene AR إقرار مطابقة الاتحاد الأوروبي EU نقر نحن جروندفوس بمقتضى مسؤوليتنا الفردية بأن المنتجين MG ML اللذين يختص بهما الإقرار أدناه يكونان مطابقين لتوجيهات المجلس المذكورة أدناه بشأن التقريب بين قوانين الدول أعضاء الاتحاد الأوروبي EU TH คำประกาศความสอดคล องตามมาตรฐาน EU เราในนามของบริษัท Grundf...

Page 20: ...ets suivants Exigences de sécurité pour les équipements électriques basse tension ordonnance n 2573 14 2015 Normes utilisées NM EN 60034 1 2019 Cette déclaration de conformité marocaine est uniquement valide lorsqu elle accompagne la notice d installation et de fonctionnement Grundfos AR إقرار المطابقة المغربي نحن جروندفوس نقر تحت مسؤوليتنا وحدنا بأن المنتجات التي يتعلق بها الإقرار أدناه تتوافق مع...

Page 21: ...l and Electronic Equipment Regulations 2019 Standard used EN IEC 63000 2018 These motors must not be put into service until the machinery into which they are to be incorporated has been declared in conformity with the relevant directives This UK declaration of conformity is only valid when published as part of the Grundfos installation and operating instructions publication numbers 98079951 MG and...

Page 22: ...ою виключну відповідальність за те що продукція до якої відноситься ця декларація відповідає вимогам українським постановам стандартам та технічним умовам щодо яких заявлена відповідність як зазначено нижче Дійсно для продуктів Grundfos MG ML Постанова 1067 від 2015 р Технічний регламент низьковольтного електричного обладнання Постанова 533 від 2018 р Про внесення змін до деяких положень Застосова...

Page 23: ...6th Floor Aju Building 679 5 Yeoksam dong Kangnam ku 135 916 Seoul Korea Tel 82 2 5317 600 Fax 82 2 5633 725 Latvia SIA GRUNDFOS Pumps Latvia Deglava biznesa centrs Augusta Deglava ielā 60 LV 1035 Rīga Tel 371 714 9640 7 149 641 Fax 371 914 9646 Lithuania GRUNDFOS Pumps UAB Smolensko g 6 LT 03201 Vilnius Tel 370 52 395 430 Fax 370 52 395 431 Malaysia GRUNDFOS Pumps Sdn Bhd 7 Jalan Peguam U1 25 Gle...

Page 24: ...ademarks displayed in this material including but not limited to Grundfos the Grundfos logo and be think innovate are registered trademarks owned by The Grundfos Group All rights reserved 2022 Grundfos Holding A S all rights reserved ...

Reviews: