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GAS-Guard 8 and GAS-Guard 3 Operations and Maintenance Guide 

810-1734-00 Rev A 

 

18 of 18 

Forms 

Verification Cylinder Data Sheet  

Upon successful installation of your verification cylinder; please complete and fax or e-

mail this Verification Cylinder Data Sheet to Technical Support at: 

+1 (503) 924-3290 

fax

 

 or [email protected] 

e-mail

 

 

Attn:  

Siemens Product Support 

From:  

 

Customer Information 

Company:  

Site:  

Site Address: 

 

City, State and Zip: 

 

Country:  

 Gas Cylinder Information 

Installer’s Name: 

 

 

 

Installation Date: 

 
 

 GAS-Guard Serial 

Number: 

 
 

Helium high pressure  

gauge (psig): 

 

 

 

Verification high pressure 

gauge (psig): 

 

 

 

Verification Cylinder  

Lot Number:  

 

Verification Cylinder 

Manufacture Date: 

 

 

Verification Cylinder  

Gas Components 

Certified Concentrations 

Hydrogen H

2

 ppm

Oxygen O

2

 ppm

Methane CH

4

 ppm

Carbon Monoxide 

CO 

ppm

Carbon Dioxide 

CO

2

 ppm

Ethylene C

2

H

4

 ppm

Ethane C

2

H

6

 ppm

Acetylene C

2

H

2

 ppm

Table 7: Verification cylinder datasheet 

 

Содержание GAS-Guard 3

Страница 1: ...SIEMENS GAS Guard 8 and GAS Guard 3 Operations and Maintenance Guide 810 1734 00RevA ...

Страница 2: ...support serveron com Copyright 2006 Serveron Corporation All rights reserved Serveron TrueGas and LoadGuide are registered trademarks of Serveron Corporation All other trademarks registered trademarks service marks and trade names are the property of their respective owners ...

Страница 3: ...ff 9 Manual DGA Sampling 10 Operational Parameters 10 Maintenance 11 Helium and Verification Gas 11 Helium Gas 11 Helium Dryer 11 Helium Cylinder and Dryer Removal and Replacement 11 Verification Gas 13 Verification Gas Cylinder Removal and Replacement 13 Leak Check Fittings 14 Replacing Fuses 14 Oil Filter Service 15 Customer Replaceable Units CRU s 16 Cleaning 16 Internal Cleaning 16 External Cl...

Страница 4: ...ution alarm settings for transformers with no previous gas data 6 Table 3 Recommended caution alarm settings for transformers with a stable gassing history 6 Table 4 Recommended caution alarm settings for gassing transformers after degassing 7 Table 5 Front panel lights 8 Table 6 Customer Replaceable Units 16 Table 7 Verification cylinder datasheet 18 ...

Страница 5: ...Guard is an on line laboratory grade gas chromatograph The GAS Guard detects and measures fault gases found in the cooling oil of power transformers The GAS Guard is designed and constructed to operate under those environmental conditions typical of a power substation or generating facility Figure 1 Siemens GAS Guard ...

Страница 6: ...nd V Alternating Current and Voltage H Connect to mains live conductor brown L Connect to mains neutral conductor blue __I__ O The I position indicates the power switch is ON The O position indicates the power switch is OFF This device has been tested and certified by the Canadian Standards Association International to comply with applicable U S and Canadian safety standards Table 1 Product Symbol...

Страница 7: ...ent Siemens will periodically confirm calibration of the GAS Guard as well Note For Serveron Monitoring Service customers upon installing a new verification cylinder fill out and return the Verification Cylinder Datasheet located at the end of this document and return it to Technical Support Alarm Settings Following installation of the GAS Guard and after an initial 24 hour stabilization period th...

Страница 8: ...e 10 Baseline 20 above initial measured PPM Table 2 Recommended caution alarm settings for transformers with no previous gas data Transformers with a stable gassing history Use the GAS Guard to measure the transformer oil for thirty 30 days in order to establish baseline levels of the eight fault gases Set the GAS Guard caution alarms levels to the measured baseline levels value PPM shown below Ga...

Страница 9: ...re are no recommendations possible for transformers in this category In order to establish the caution and alarm levels allow the GAS Guard to run for thirty 30 days to establish gassing trends and baseline measurements After this data has been collected you should consult with Siemens support serveron com to determine the appropriate caution and alarm settings for the transformer Viewing GAS Guar...

Страница 10: ...AS Guard needs service The service indicator is activated by a number of GAS Guard specific parameters For cause identification proceed as follows GAS Guard View Open GAS Guard View program and update the unit database After updating the database open the event log and view recorded event condition Serveron Monitoring Service Open the Serveron Monitoring Service Client program and view the event l...

Страница 11: ...or close the Siemens manual DGA sample port oil shutoff valve as well as the Siemens oil return valve located on the bleed fixture The figure below is a typical example of one of these valves There are at least two valves per installation one for the inlet and one for the outlet The exact location and number of these valves will vary by installation The valve is shown in the ON position in the fol...

Страница 12: ...this port for correlation of GAS Guard data to manual DGA data The location of the sample port will vary by installation The sample port provided with the GAS Guard is a in locking valve with a 1 4 in FNPT fitting No special procedures are required when obtaining a manual DGA sample Figure 3 DGA sample port Operational Parameters Please see the Siemens GAS Guard Data Sheet available online at www ...

Страница 13: ...ave developed The helium dryer should be replaced when the helium cylinder is replaced Helium Cylinder and Dryer Removal and Replacement WARNING When full the helium cylinder is pressured to greater than 2000psi 138 bar Helium is regulated to 80psi 5 5 bar nominal before entering the GAS Guard Always follow Compressed Gas Association CGA guidelines when handling and transporting compressed gases C...

Страница 14: ...clips The dryer is not flow directional Note Do not remove the helium dryer plugs at this time 14 Verify the helium regulator shutoff valve is closed and slowly turn the valve located on top of the helium cylinder fully counterclockwise open 15 Slowly turn helium regulator shutoff valve counterclockwise open until helium begins to flow At this point gas should be escaping from the stainless steel ...

Страница 15: ...alibrate the GAS Guard The cylinder contains a certified NIST traceable concentration of the eight transformer fault gases measured by the GAS Guard 1 Turn off power to the GAS Guard by opening the GAS Guard door and toggling the power switch located in the upper right hand corner to the OFF position 2 Turn the verification cylinder tank valve to the fully OFF clockwise position 3 Using a 9 16 in ...

Страница 16: ...he first month of continuous use all regulator gas and oil fittings should be checked for leaks A semi annual check of these fittings is recommended following the one month initial check Replacing Fuses The GAS Guard has a variable input power supply capable of receiving input of 115VAC or 230VAC 15 50 60 Hz Current draw is 6A max at 115VAC and 3A max at 230VAC There are three 4A 250V type 3AG T f...

Страница 17: ...e GAS Guard by opening the GAS Guard door and toggling the power switch located in the upper right hand corner to the OFF position 2 Loosen the filter cap while supporting the filter housing with an adjustable end wrench The exact filter location will vary by installation 3 After loosening the filter cap slowly back off the cap until transformer oil starts flowing out the purge hole located on the...

Страница 18: ...084 XX Assy Power Supply 750 0090 XX Column Assembly GAS Guard 3 250 0130 XX Filter Oil R750 0076 XX Replacement Column Assembly1 GAS Guard 8 R750 0084 XX Refurbished Power Supply Assy Table 6 Customer Replaceable Units Please contact Technical Support support serveron com for removal and installation procedures Cleaning Internal Cleaning No internal cleaning of the GAS Guard is required doing so ...

Страница 19: ...hnical Support 1 866 273 7763 E mail support serveron com Returned items should be shipped in the original packaging or like packaging to avoid shipping damage If original packaging or like packaging is not available contact Technical Support for shipping assistance Warning Shipping of the GAS Guard without installing the internal foam support part 010 0038 XX can cause damage to the GAS Guard and...

Страница 20: ...pport From Customer Information Company Site Site Address City State and Zip Country Gas Cylinder Information Installer s Name Installation Date GAS Guard Serial Number Helium high pressure gauge psig Verification high pressure gauge psig Verification Cylinder Lot Number Verification Cylinder Manufacture Date Verification Cylinder Gas Components Certified Concentrations Hydrogen H2 ppm Oxygen O2 p...

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