Tuesday, 9 June 2009

Method Statement for MOTOR SOLO RUN PROCEDURE

TABLE OF CONTENTS

1.
SCOPE OF WORK
-
3
2.
REFERENCES
-
3
3.
PROCEDURE FOR MOTOR SOLO RUN
-
3
4.
HEALTH, SAFETY & ENVIRONMENT
-
15
5.
ATTACHMENTS
-
15



















1      SCOPE OF WORK
This procedure covers the Motor Solo Run test for MV, LV motors.


2      REFERENCES
SATR-P-3407
LV – Motor Insulation Resistance and Functional Testing.
SATR-P-3409
MV – Motor Insulation Resistance and Functional Testing.

3      PROCEDURE FOR MOTOR SOLO RUN.
3.1      Pre-requisites for Motor’s prior to solo run test
The following procedure shall be followed for No-Load Run Test of De-coupled motor. For Directly coupled motor trial run test shall be done during commissioning phase.
3.1.1 The Motor / LCS Name Plate details shall be verified with the latest drawings revision.
3.1.2 Installation and pre alignment of motor with drive shall be completed.
3.1.3 All motors shall be pre-tested for its correct rotation before terminating the power cables.
3.1.4 Associated switchgear shall be energized
3.1.5 Lube oil system (where Bearing cooling system is in place) shall be tested and shall be fully operational in auto mode with all associated interlocks.
3.1.6 IPCS system shall be ready and configured with the vibration setting as per the vendor recommendations, where ever motors installed with vibration monitors. We should be able to print out the vibration graph from the system after the no load trial run.
3.1.7 Bearing and winding temperature sensors shall be tested and shall be in service with alarm and trip settings as per vendor documentation.
3.1.8 Motors with differential protection shall be tested and certified for protection’s correct functionality.
3.1.9 Motor protection relay shall be tested and certified.
3.1.10 The cable connection tightness at the motor Terminal box and Switchgear Panel end shall be checked.
3.1.11 The Motor earthing connection tightness shall be checked.
3.1.12 Check the Motor & Cable Insulation resistance test result are satisfactory.
3.1.13 Check the motor control & Auxiliary circuit connection as per schematic diagram.
3.1.14 Check the Motor feeder accessories functional test for ON/OFF/TRIP/
Emergency trip.
3.1.15 Check the Motor Space heater circuit if applicable.
3.1.16 Thermal detector test shall be done.          
3.1.17 A folder containing all the required/ relevant information’s shall be submitted to company to prove that all the  motor, associated sub-systems and safety systems are in place before going ahead with the no load trial run.
3.1.18 For all HV/MV motors, during the trial run, Luberef member with vibration recorder/analyzer shall be present to record the vibration reading for the future maintenance records.

3.2      CIVIL CHECK
3.2.1 Pre-alignment completed
3.2.2 Grouting completed

3.3      CHECKS PERFORM BY MECHANICAL TEAM.
3.3.1 Check the motor is decoupled from the load.
3.3.2 Check the tightness of Motor fixing arrangement.
3.3.3 Motor shaft shall rotates freely after un-coupling.
3.3.4 The lubrication and ventilation systems shall be verified.
3.3.5 Mark Magnetic centre if applicable.

3.4      INSPECTION TEST PLAN FOR ELECTRICAL WORK
During No-Load run of Motor the following parameters shall be recorded in the 
approved inspection test plan.
3.4.1 Current in each phase
3.4.2 Winding temperature for MV Motors.
3.4.3 Drive end and Non drive end bearing temperature.
3.4.4 Ambient Temperature.
3.4.5 Speed (rpm)
3.4.6 Direction of Rotation.
3.4.7 Vibration measurement (Acceptance Criteria as per 2.6 )
3.4.8 Noise measurements as applicable.

3.5      MOTOR NO-LOAD TEST
Motor no-load test shall be as follow
Motor Rating (kW)
LV Motors
MV Motors



L1
>250kW
2 hrs Trial Run
2 hrs Trial Run
≥ 55 kW ≤ 250 kW
2 hrs Trial Run
2 hrs Trial Run
< 55 kW
2 hrs Trial Run
--------------
For Pump test 
Shall be check only direction of the motor
--------------
* For Directly Coupled    Motors
Trial run test shall be done during commissioning phase
--------------


3.6      MECHANICAL VIBRATION
At normal operating temperature, the vibration velocity shall not exceed 2.8 mm/s RMS , or 4 mm/s PEAK, in any direction.
Motor Frame Vibration Velocity: The vibration severity of the motor frame, including main terminal boxes, should not exceed 4.5 mm/s rms.
For bearing fitted with proximity probes, the unfiltered peak-to-peak value of vibration (including shaft ‘run out’) at any load between on load and full load shall not exceed the following values.
The maximum acceptable values of DE / NDE bearing temperature during Solo run shall be 54°C (Ambient) + 10°C
N° of Pole
Vibration (µm)
Two-pole motors
50µm
Four-pole motors
60µm
Fix-pole or higher motors
75µm





The following certified testing instrument shall be used for measurements :
3.6.1 Insulating tester & Multimeter
3.6.2 Digital AC/DC Clamp Meter
3.6.3 Tachometer Non contact type
3.6.4 Infrared Thermometer
3.6.5 Thermometer / Temperature Gauge
3.6.6 Vibration Monitor
3.6.7 Digital sound Level meter
Note:
In case when Vendor testing procedure using specific vendor particular test formats
are envisaged only for such special application and can only be carried after Company approval.
Note: All the meters shall be checked for valid calibration prior to measurement

3.7      NOISE LIMITS
3.7.1 Unless otherwise specified, the sound pressure level shall not exceed 85 dB in the work area, i.e., any position accessible to personal not less than 1 meter from equipment surfaces.
3.7.2 In the event that more stringent limits are required, this will be indicated in the
VENDOR’S documentation.
3.7.3 Noise level is measured by using digital sound level meter.

3.8      UTILITY OF MV MOTORS
I. Introduction
The starting of large motors and their associated loads has always presented an electrical and equipment challenge. Large motor starting can disrupt processes, affect other connected utility users, and even prevent a successful start. The trend in recent years has been an growing increase in the use of large electric motors, sometimes at very remote sites with little ability to support high-current starts.
MV AC Adjustable Speed Drive [MV ASD] technology has advanced as well. Using MV drives to accelerate large motors to speed and connecting them without power surges has become more economical. This paper outlines the motor, drive and system technical areas and tradeoffs to enable proper consideration and selection of MV ASDs for synchronized starting applications.

II. Starting Large Motors
Starting a large motor induction or synchronous motor by connecting it directly across its utility source can create large voltage disturbances.
This voltage disturbance results from the large initial current required at standstill, called “locked rotor current”. For most induction motors this starting current is about 600% of the motor’s running amperes. Figure 1 show a typical induction motor characteristic at start, including both per unit torque and current.
Notice that the line current level remains high for most of the acceleration period. Once the motor speed is past the speed where its maximum [breakdown] torques point occurs, the current falls to a running level determined by the load and the design slip.

                

                 Figure 1 Full voltage start of single or multiple induction motors

III Effects and Impact of Across the Line Motor Starting
The starting-induced voltage disturbance has several undesirable results in several areas. Consider the following:
a. Remote locations on long power lines – the overhead line utility feeds to these sites are highly reactive in their impedance characteristics. Since induction motor starting power factor is typically 0.20 lagging, voltage drop at the utility feed can be high.
b. Many new motors applications are very high power – since plant production is increasing, loads such as ID fans and mills are growing. In other industries such as petrochemical large compressors are moving from gas turbine and internal combustion prime movers to electric motors. Since many of these applications are located in remote areas or where the existing power system is at or near capacity, the voltage drop issue compounds to become especially critical.
c. Processes in rest of facility may suffer from voltage drop - any time the voltage feeding motors or plant loads falls to less than 90% of rated levels the result can be a major disruption, from disoperation to process shutdown.
d. Utility company restrictions - utility providers may either forbid or restrict high-current starts, or charge high rates for a long period following such starts. Such regulations and restrictions can come from commitments to other nearby customers to provide power at contractually guaranteed voltage levels.
Reducing Starting Current
Motor inrush current varies directly with voltage applied to the motor. To reduce system voltage disturbance, the starting current can be reduced by using one of various types of starting equipment that temporarily reduce the motor terminal voltage. Figure 2 shows such an arrangement.

          

                               Figure 2 Reduced voltage start of induction motors

Reduced voltage starters have several effects beyond current reduction. First, the torque available to start and accelerate the connected load decreases by the inverse-square of voltage. At 60% voltage, for example, available torque is 60% x 60% = 36%. While this might be sufficient for such loads as fans or pumps, a mill load requiring 100% motor torque would not start.
Second, the current and start torque keep the same shape as the motor applied at full voltage. The minimum torque [pull-up torque] also reduces with applied voltage reduction, and may not be high enough to accelerate some loads to past the critical breakdown [maximum design torque] point. Third, incoming amps are still highly reactive, so voltage drop to the motor will roughly be reduced in proportion to the reduction in starting current.
One final note is appropriate. Most synchronous motors started across the line develop torque using a cage-type rotor winding. The resulting sync motor starting current inrush characteristics are of a magnitude and shape quite similar to a squirrel cage induction motor of the same size.
IV. Some Effects Of Across the Line Starts On The Motor
Every time a motor is started across the line, it produces several areas of high stress in the motor.
1. The very high starting currents put mechanical stress on the stator windings, Such stress cycles contribute to winding fatigue that can lead to stator insulation failure.
2. The high current through the stator quickly raises the temperature of the windings. Each acceleration cycle takes some life from the motor windings insulation. The longer the cycle of acceleration, the more heat is built up in the stator. Protection is needed to prevent successive starts from causing irreparable damage to the windings. Motors are specified and designed with an allowable limit on the number of starts per hour.
3. The rotor also carries very high currents during the full voltage, high-slip acceleration cycle. The magnitude of the rotor heat is roughly equal to the amount of energy contained in the connected load at its final velocity. For very high inertia loads, such as a cement kiln ID fan, a motor that must start the fan across the line must be designed with much more mass to absorb the heat from the start. Such designs can be very expensive.
Using a reduced voltage starter does reduce stator heating, but does nothing to reduce the amount of heat induced in the rotor during a direct online start. A reduced voltage start does tend to lengthen the start cycle and could possibly allow some of the rotor heat to be dissipated during the start cycle.
However, the total amount of heat injected into the rotor for a given start is the same as if it were controlled by a full voltage starter.
V. Starting motors Using Adjustable Speed Drives [ASDs]
Slip is the difference in actual rotor speed and the synchronous speed of the motor. The synchronous speed depends on motor design and applied frequency. This relationship is shown by the formula below:
Sync RPM = 120 * frequency / number of poles
For example, a 4-pole motor run on a 60 Hz supply would have a synchronous frequency of 120 x 60/4 = 1800 rpm. At 30 Hz, the same motor’s sync RPM would be 900 RPM, and so forth.
Figure 3 shows general induction motor speed-torque characteristics, the shape of which was shown in the earlier starting current discussions.
        Figure 3 General speed torque characteristics of an induction motor at a particular
        applied frequency
                              
Referring to Figure 3, motoring torque is produced only when the motor turns at a small RPM difference below the synchronous speed. This is typically on the order of about 1% of synchronous speed.
The rated torque of the motor is the design value on the motor nameplate that is developed with rated voltage and rated frequency at the rated slip RPM below the synchronous RPM. In English units, this rated torque can be calculated as
Rated Torque in lb-ft = Rated HP x 5252 / Rated RPM
For example, for a 7500 HP 900 RPM synchronous speed and a rated speed of 892 RPM,
T rated = 7500 x 5252 / 892 = 44159 lb-ft
All the across-the-line induction motor starting characteristics discussed so far depend on the motor current and torque design starting at 100 percent slip. It has already been shown that a motor designed for 50 Hz will turn at half its rated RPM on a 30 Hz supply. The induction motor characteristic then becomes a family of curves as frequency increases from near zero, to rated speed. Figure 4 shows this family of curves.


             Figure 4 Speed torque characteristics of                                      Figure 5 Load acceleration and line amps of                                 
            an induction motor on an increasing [ASD]                                   for a Voltage Source  ASD feeding                                 
                                                                                                                   and induction motor  
Figure 4 Speed torque characteristics of an induction motor on an increasing [ASD] applied frequency During the acceleration, frequency and voltage are generally controlled such that full voltage is reached at the design rated RPM of the motor. Motor voltage and current are regulated to provide speed and torque control to the load. The voltage to frequency ratio is held roughly proportional. In practice torque developed at very low frequencies falls off and extra voltage above the value of the volts / HZ ratio is automatically applied to regain the lost torque.
An AC ASD would accelerate a constant torque load such as a conveyor or cement mill by advancing frequency as shown below in Figure 5.
Several things can be noted from the simplified drawing in Figure 5.
1. First, the motor delivers torque to the load from the part of the torque curve to the right side of the peak [breakdown] torque point, at low slip, as if it were operating at its rated running electrical conditions. This means that the stator or rotor currents are no higher than under normal operation.
Therefore there is no longer any limit on the number of starts in any time period.
2. For a VSI [Voltage Source Inverter] topology drive using DC link capacitors, the AC utility amps reflect the kW actually being delivered to the load. Figure 5 shows the relation of utility amps vs. load RPM for a VSI ASD for a constant torque load. Utility amps start out very low [transformer magnetizing amps plus initial low kW] and increase as speed and kW increase.
3 For a current source topology drive [with DC link inductors], the start cycle utility line amps are higher than for a VSI drive. In some cases, line current is roughly equal to stator current, and is approximately constant for a constant torque load. Stator amps are determined by the load torque as a ratio of rated amps and torque. Essentially, the stator amps and line amps do not exceed the actual load amps, This eliminates all the utility supply problems described above. If the utility can sustain the final loaded motor amps then it can always sustain the ASD line amps during a start.
VI. Synchronized Motor Starting Using the ASD
The preceding information provides a basis to apply the advantages of the ASD to what is called “synchronized starting”. In synchronized starting, ASDs are used to accelerate a motor and its connected load to line frequency equivalent speed and then connect them to the power grid. This synchronized starting causes little impact on utility current or voltage beyond normal running values for the motor and load.
The arrangement shown in Figure 6 is typical of a VSI ASD connected to a single motor for the purpose of synchronized starting. A review of the circuit and a synchronized start cycle follows.

Figure 6 Typical one-line of a single VSI ASD synchronized start system for an induction motor
The major components included in the system of Figure 6 are summarized below.
1. M Induction motor to be started
2. Converter-Inverter – ASD variable frequency rectifier and inverter.
3. M1 & M1A Input disconnect and pre-charge contactor
4. PT Voltage sensing transformers for input and output
5. Drive control microprocessor- based drive control with synchronizing logic
6. L-1 Output isolation inductor for closed transition of motor to utility
7. M2 Drive isolation contactor and switch – open during utility operation
8. M3 Bypass contactor controlled by drive synchronizing microprocessor
9. CTO Current sensing transformer to assure utility current flow after synchronizing.
            10. Relay 25 Independent synchronizing check relay used as verification of synchronize
      conditions.

4      HEALTH, SAFETY & ENVIRONMENT
The entire worker shall be given a full safety induction course & HSE training on all aspects of health, safety and environment together with regular refresher courses as applicable.  All employees shall strictly follow the project health & safety rules and regulation.  The environment in and around the work area shall be well protected.

All persons involved in the Energization must wear PPE suitable for the task being undertaken by them and the same shall include the following as a minimum:
·         Helmet
·         Safety shoes
·         Safety glasses
·         Safety overalls

Inside substation shall be available:
·         Platforms & mats that are adequate suitable for that rated operating voltage)
·         Insulating gloves
·         High voltage insulating rods that are adequate suitable for that rated operating voltage
·         Fire extinguishers (CO2)
·         Safety mask


5      Attachments
Attachment 1 – SATR-P-3407 (SAUDI ARAMCO TEST REPORT)

Attachment 2 – SATR-P-3409 (SAUDI ARAMCO TEST REPORT

Saturday, 6 June 2009

இந்திய ரூபாய் நோட்டுகளைப் பற்றி தெரிந்து கொள்ளுங்கள்​!...



1000 ரூபாய் நோட்டு

 500 ரூபாய் நோட்டு




100 ரூபாய் நோட்டு

50 ரூபாய் நோட்டு





 

Friday, 5 June 2009

Indian Embassy Services to Indian Nationals in Saudi Arabia Eastern Province !!


Embassy of India Riyadh, Saudi ArabiaIndian Embassy Minister and Deputy chief of mission, on Saturday officially inaugurated here the new Indian passport and attestation outsourcing center offering embassy services to Indian nationals in Eastern Province.
 “The new outsourcing office is in line with India’s policy to reach out to the expanding large Indian communities in different parts of the world and to provide efficient and transparent services in a comfortable environment to the Indian community with minimum additional financial liability,” said Shahare.
Two embassy mission officials from Riyadh, Shahare said, will be deployed at the center regularly on Thursdays and Fridays in order to monitor and to provide attestation facility. The rented office premises for Indian counselor service mission in Eastern Province near the International Indian School Dammam was closed down on Friday.
The mission has entered into a subcontract with Dubai based VFS Global for outsourcing its passport, visa and consular services. Indian consulate in Jeddah outsourced its consular services last December and an outsourcing office started functioning in Riyadh on Feb. 11.
The new center is located at New Al-Adama District, Al-Rashed Al-Mutlaq Building, Shop # 5, Ground Floor near Al-Muna Internationl Indian School. The center will be working from Thursday through Sunday from 8.30 A.M. to 5 P.M. and will receive passport applications for renewal and attestation of consular documents in the initial stage. SR15 will be charged for passport related jobs and SR10 will be charged for any type of attestation documents by VFS Global. 

The consular wing of the Indian Embassy offers, among others, passport and document authentication services available in all major cities of Saudi Arabia.

DAMMAM :
India Passport Application Centre,
Al-Rashid Al-Mutlaq building,
Central hospital street (al mustashfa street),
Cross 19, Al-Adama, behind 
Creative AcademyDammamSaudi Arabia
Telephone numbers : 03- 8285441 and 03-8285449 and 01-2886896, 2886972, 288 6935
Fax no. 01- 288 6928
E-MAIL: 
info.inriyadh@vfshelpline.com 

Days and timings for submission of passport-related applications:
Thursdays through sundays (four days a week)
From: 
08:30 hrs. to 15:00 hrs.
Days and timings for delivery of serviced passports
Next thursdays through wednesdays from 
08:30 hrs. To 17:00 hrs.
Delivery of lop/damaged cases: after 30 days.
Days and timings for submission and delivery of attestation documents
Thursdays and Fridays only
From 
08:30 hrs. To 16:00 hrs. With delivery of the same after every half an hour interval.
VFS charges: for a passport: SR.15/- & for attestation: SR 10/-.
Lunch hours : 
12:30 hrs. To 13:30 hrs.
ADDITIONAL SERVICE CHARGES TO BE LEVIED BY M/S VFS GCC LLC :
For Indian passport-related services : SR. 15/- per application
For Attestation of documents : SR. 10/- per document
For Visas : SR. 70/- per application
In Free Renewal cases :  VFS will take one-time service charge only.
Indian Workers Welfare Fund :  SR 8/- extra along with government fee prescribed.

Tatkaal fee for visa issuance within 48 hours subject to clear records: Additional SR.135/- government fee and SR. 50/- additional service charge of VFS are to be paid. 

Tatkaal service for issue of passport is also available and applicant has the option to submit application at the Embassy as well.




ADDRESS  IN JEDDAH :
Map














Consulate General of India,
Villa No.34,
Behind National Commercial Bank,
Near Al Huda Mosque,
Tahlia Street,
Jeddah-21421
Telephone:  00966-26520104, 00966-26502112
Fax : 00966-26533964
Office Hours: 08:30 am - 05:00 pm  (except Thursday & Fridays)


RIYADH :
Indian Embassy Riyadh
B-1, Diplomatic Quarter,
Post Box Number 94387,
Riyadh-11693
Telephone : 00966-1-488 4144 / 488 4691 / 488 4692

24 HOURS HELP LINE
Telephone Numbers : 00966-1-488 4697 / 488 1982
Help Desk during office hours (On Working days : Sat - Wed)
Labour issues: Telephone numbers : 00966-1-4804554/4884144 Ext. 107 
Death Cases : Telephone numbers : 00966-1-4886348/ 4884144 Ext.109 

Fax Number :  00966-1-4810742
E-mail          :   cw@indianembassy.org.sa
Website       :   http://www.indianembassy.org.sa/

INDIA PASSPORT & VISA APPLICATION CENTER, UMM AL-HAMAM

NOTE: INDIA PASSPORT & VISA APPLICATION SULEMANIA CENTRE WILL BE MOVED TO A NEW LOCATION (UMM U\AL-HAMMAM) 
(PASSPORT & VISA SERVICES)
1st Floor, Dove Plaza, (Hyper Panda),
Umm 
Al-Hamam Street Umm Al-Hamam Street, 
Riyadh
VAC Telephone and Call Center: 01- 4821971/4831829.
Website   : http://in.vfsglobal.sa.com
E-mail      : info.inriyadh@vfshelpline.com
E-mail for : feedback, suggestion and complaints : feedback.INRYD@vfshelpline.com

Timings :
Submission  : 08:30 hrs - 15:00 hrs (Sat - Wed)Collection    : 08:30 hrs - 17:00 hrs (on all working days)
(After seven working days, if the passport is not collected by the applicant from the office where the application was submitted, he/she will have to collect the same from the Embassy.)

Note: INDIAN PASSPORT RELATED SERVICES LIKE :
  • Re-issue of a new passport
  • Change in any personal details printed on the 1st page or last laminated page of the passport
  • Free renewal cases
  • Birth Registration and issue of separate passports to newborn childs
  • Loss of Passport and Damaged passport cases
  • Change of appearance applicants need to visit the Embassy for physical verification the day following submission of his application.
  • PIO and OCI applications will be accepted in the above office
  • All visa-related applications will be accepted ONLY in the above office
  • All agents and company's authorized representatives will submit their respective applications ONLY in the above office
  • Diplomatic and Official passports applications will continue to be received at the Embassy as per the established procedure
  • Indian-Citizenship related enquiries will be handled at the Embassy telephonically or in person and then applications may be submitted at the above office. 
Collection Center : (FOR SUBMISSION AND DELIVERY OF PASSPORT APPLICATIONS ONLY)
Indian Passport Application Centre,
Office No. 305, 3rd Floor,
Al Yamama Cement Company Building,
Batha Main Road, Batha, Riyadh, Saudi Arabia
VAC Telephone and Call Center: 01- 288 6896 / 288 6972 / 288 6935. 
Fax number : 01- 288 6928

Website : 
http://in.vfsglobal.sa.com/
E-mail    : 
info.inriyadh@vfshelpline.com 
Timings
Submission  :  
08:30 hrs - 15:00 hrs (Saturday - Wednesday)
Collection    :  
08:30 hrs - 17:00 hrs on all working days.
(After seven working days, if the passport is not collected by the applicant from the office where the application was submitted, he/she will have to collect the same from the Embassy.)Note:
• The above Collection Centre is meant for submission of passport applications or passport-related services as mentioned above ONLY by individuals and families.
• No passport application from agents or any company's representatives will be accepted in the above collection center
Time at the 
Passport & Visa Services Center:
Turn around time for visa applications would be 1 working day from the date of submission for normal applicants and 1-3 working days for foreign nationals.
Turn around time for Passport Applications would be 1 working day under normal circumstances.

Attestation of Consular Documents Services at the Embassy
M/s VFS will have an Office on the premises of the Embassy for ATTESTATION OF DOCUMENTS SERVICES, which will include Sponsorship Declaration, Police Clearance Certificate, Power of Attorney, Sworn Affidavit/Declaration, Emergency Certificate, attestation of Certificates/Degrees, Life Certificates, attestation of opening of NRE A/c form, NRI Certificate, Change of Profession letter, Salary Certificate and any other misc. attestation-related consular services/issue of letters.

Embassy of India Riyadh,
B-I, Diplomatic Quarter,
Post Box No.94387,
Riyadh -11693, Saudi Arabia
Telephone Number : 00966-01-488 4144 / 488 4691 / 488 4692 / 483 4252/ 483 4254
Helpline  number : 01- 488 4697/488 1982
Fax number :  01- 488 4183 


CHECK THE STATUS OF YOUR APPLICATION FOR INDIAN PASSPORT (APPLIED IN INDIA)
Visit the Government of India, Ministry of Foreign Affairs website (link provided below).  Select name of the City, type your application reference number and select the year in which you submit the application like 2010, 2011 etc. and click the Submit button and wait for few seconds you will be displayed the status of your application on the same page with all information like Application Name, Date of Birth, Date of Application, Reference number.


Prepared & Collection by M.Ajmal khan.