www.siemens.com/energy Transforming analysis into reliability. SITRAM® GAS-Guard 8 from TLM™ – Transformer Lifecycle Management™ Answers for energy. SITRAM® GAS-Guard 8: continuous gas-in-oil analysis of critical gases directly on the transformer For reliable operation of transformers: Analyze fault gases – promptly detect faults Electricity has to flow reliably. As one of the most valuable components in your network, transformers play a key role in ensuring that it does. That’s why it’s so important to know their precise status – so you can prevent unplanned downtimes, optimally schedule planned downtimes, reduce maintenance costs, and ultimately use your investment in the best possible way. Fault gases are an important indicator of increased risk of a transformer fault. Every typical fault – whether it’s the formation of electric arcs, partial discharges, local hot spots or generally inadequate cooling – generates specific dissolved gas in various concentrations. That’s why continuous monitoring and assessment of gas development are so important. They allow an early response – so that more extensive damage can be reliably prevented. Dissolved gas analysis, or DGA, is a modern yet proven method for doing this. Its goals are: Monitoring known faults along with the early detection of faults – continuous trend analysis of critical gases detects incipient fault conditions at an early stage and monitors them as they develop. Reducing maintenance costs – with condition-based maintenance using online monitoring. Estimating the remaining service life – measuring oil moisture, oxygen, CO₂, and CO supports the calculation of thermal aging. Siemens brings the DGA lab to your transformer – continuously, precisely, and reproducibly. With the SITRAM® GAS-Guard 8. Overview of the gases in the transformer oil that are relevant for making a meaningful diagnosis Methane CH₄ Hydrogen H₂ Acetylene C₂H₂ Ethylene C₂H₄ Nitrogen N₂ Oxygen O₂ Carbon monoxide CO Carbon dioxide CO₂ Ethane C₂H₆ SITRAM® GAS-Guard 8 during operation SITRAM® GAS-Guard 8: A guard right on your transformer All critical gases always under control SITRAM® GAS-Guard 8 (GG 8) provides comprehensive online fault gas analysis using gas chromatography. Located directly on the transformer, it generates con tinuous information about all key gases – to help you keep your transformer fleet in top shape. For decades, gas chromatography (GC) has been the reference standard and scientifically accepted lab method for measuring gas-in-oil levels. The SITRAM® GG 8 brings the DGA laboratory to your transformer with its rugged gas chromatograph. It operates continuously in a self-calibrating manner and has an adjustable measuring interval. It measures the gases dissolved in the transformer oil at regular intervals, even hourly if need be. In addition, SITRAM® GG 8 provides measurements of the oil tem perature, moisture, and the load. SITRAM® GG 8 allows correlations to be drawn between fault gases, moisture-in-oil, oil temperature, and ambient temperature. The instrument supports all IEEE and IEC diagnostic tools, thus allowing rapid warning and diag nosis of developing faults. SITRAM® GAS-Guard 8 – factors for the success of the largest internationally installed base Rugged and field-capable: gas chromatography optimized for use in the field Analysis of individual gases without cross-sensitivities Reproducibility by automatically calibrating to the reference gas GC is the methodology used in oil labs (IEC-/IEEE-tested) Moisture sensor included with the system Indication of load-dependent gas development Quick and variable installation Attached in a compact manner directly on the transformer and field-proven, SITRAM® GG 8 is the most capable instrument in the field worldwide. There are many good reasons for its high reliability and low lifecycle costs – after all, it has the largest installed base of all comparable products. SITRAM® GAS-Guard 8 is part of our SITRAM® MONITORING family. This modular set of solutions helps ensure high availability and service life for your transformers. We’ll work with you to define exactly the right solutions for your needs. MV Laptop Spectrum Power CC CCTV analoger Monitor Handy, Internetsymbole Handy Workstations Management Stations Internet Wireless Pager Fax PDA Kameras BLP Laptop Spectrum Power CC CCTV Peripheriegeräte Handy, Internetsymbole Handy Internet Wireless analoger Monitor Biomass plant Zone Indicator Pager Eingabebausteine Fax Linientrenner FCIO222 PDA Kameras BLP 1..4 NX-AIR Amis Gerät IEC61850 1..4 Workstations Management Stations Peripheriegeräte Remote HMI Biomass plant SIMEAS P Zone Indicator Eingabebausteine Linientrenner Laptop Spectrum Power CC Transformer SIPROTEK HV + MV II Local HMI GAS-Guard Remote HMI Spectrum power3 SIPROTEK EHV Amis Gerät CCTV FCIO222 1..4 Handy Internet Wireless Pager Fax PDA 1..4 Kameras BLP SIMEAS P IEC61850 analoger Monitor Handy, Internetsymbole Helium tank Peripheriegeräte Zone Indicator HV GIS Pump SITRAM Eingabebausteine Biomass plant Linientrenner FCIO222 1..4 OLM DCF/GPS Server RECLOSER-M CONTROLLER SIPROTEK HV + MV Local HMI SIPROTEK HV + MV II Pump Chromatography column PLC OLM HV Ableiter DCF/GPS Server HV GIS Contract SICAM 1703 SITRAM SICAM PAS I Oil PLC SIPROTEC OLM Contract Gas Injector port DCF/GPS Server Contract TM 1703 ACP photovoltaic plant biomass plant Leistungstrafo P Industrieanlage photovoltaic plant biomass plant Leistungstrafo BC 1703 ACP BC 1703 ACP Häuschen Industrieanlage SICAM PAS CC Siprotec Firewall SICAM Station Unit SICAM PAS CC Siprotec Firewall SICAM Station Unit Server ZugHäuschen photovoltaic plant Server Zug biomass plant Industrieanlage Microcontroller Data memory/ Alarm manager Siprotec Gas extractor Thermal conductivity detector Calibration gas Valve SIMATIC S7-400 PLC SICAM PAS CC SIMEAS P HV GIS SITRAM SIPROTEC 1..4 HV Ableiter Remote HMI Everything on your screen, everything under control – with powerful tools and with the same analysis technology as an oil lab Firewall SICAM Station Unit Server BCU protection relay Dissipatedwind turbine gas wind turbine wind turbine Häuschen Zug Switch Printer BCU 6MD66 BCU protection relay BCU 6MD66 BCU 6MD66 Communications PU 7SA522 AVR Tapcon Switch Printer PU 7SA522 With SITRAM® MONITORING Service, you won’t have to deal with the measured values on your own AVR Tapcon Switch Printer BCU protection relay HV Ableiter PU 7SA522 AVR Tapcon Measuring principle of the gas chromatograph Powerful tools – comprehensive service The transformer oil to be analyzed circulates in a loop over an extraction unit containing two different volumes – oil and gas. A gas-permeable membrane separates the two volumes from one another. The gas dissolved in oil diffuses through the permeable membrane into the gas phase. SITRAM® GG 8 and MONITORING Service – sophisticated technology combined with an expert service partnership give you a solid basis for making asset management decisions. A defined amount of this gas is removed in the injection unit and pressed with helium – the mobile phase – through the chromatography column. Depending on their specific properties, the gases have different run times during transport through the column. A thermal conductivity detector is used at the end of the column to determine the exit time of individual gas components. Along with analyzing the amplitude, it’s possible to qualitatively and quantitatively determine the gases dissolved in oil. The GAS-Guard View software allows the SITRAM® GG 8 to be controlled both on-site and remotely, and data to be accessed and displayed on a user-friendly interface. Naturally, in case of doubt, you can also make your measured data available to us online. Our DGA oil lab experts provide everything you need to be sure you’re making the right decision. These tools and services are a part of the modular TLM™ portfolio and can be supplemented with additional SITRAM® MONITORING solutions. [email protected] www.siemens.com/energy/TLM SITRAM® GAS-Guard 8: Data sheet DGA method: Laboratory-grade gas chromatography Gas External sensor inputs Accuracy ¹ Repeatability ² Range ³ Three (3) analog 4 to 20 mA inputs Sensors included are: Transformer load guide Ambient temperature Hydrogen H2 ±5 % or ±3 ppm <2 % 3 – 3,000 ppm Oxygen O2 ±5 % or +30/-0 ppm <1 % 30 – 25,000 ppm Methane CH4 ±5 % or ±5 ppm <1 % 5 – 7,000 ppm Carbon monoxide CO ±5 % or ±5 ppm <2 % 5 – 10,000 ppm Carbon dioxide CO2 ±5 % or ±5 ppm <1 % 5 – 30,000 ppm Ethylene C2H4 ±5 % or ±3 ppm <1 % 3 – 5,000 ppm Ethane C2H6 ±5 % or ±5 ppm <1 % 5 – 5,000 ppm Acetylene C2H2 ±5 % or ±1 ppm <2 % 1 – 3,000 ppm Nitrogen N2 ±10 % or ±5,000 ppm <20 % 5,000 – 100,000 ppm Optional moisture-in-oil and temperature probe (uses 2 inputs) Communications Standard physical layer interfaces: RS-232, RS-485, Ethernet fiber (100Base-FX), V.92 internal modem Optional interfaces: GSM modem, Ethernet copper (10/100Base-TX), wireless radio Protocols supported: TCP/IP, DNP3, Modbus RTU and ASCII, OPC and IEC 61850 upon request Notes All specifications are independent of oil temperature and gas pressure levels. Environmental specifications ¹ Percent or PPM – whichever is greater Operating temperature –50 °C to +55 °C ² At the calibration level Cold start temperature –20 °C ³ Gas-in-oil Operating humidity 5 % to 95 % RH non-condensing Oil inlet pressure 0 to 3 bar Storage temperature –40 °C to +75 °C Storage humidity 5 % to 95 % RH non-condensing Moisture-in-oil and oil temperature option Parameter Accuracy ⁴ Range Moisture-in-oil ±2 % 0 – 100 % RS Input power requirements <10 % of reading for oil temperature >30 °C 0 to 80 ⁵ ppm Voltage 115 VAC or 230 VAC ±15 % Frequency 50/60 Hz <18 % of reading for oil temperature <30 °C 0 to 80 ⁵ ppm Current 6 A maximum at 115 V ±0.1 °C (typically) -40 °C to +180 °C Oil temperature 3 A maximum at 230 V Physical specifications and weights ⁴ Includes nonlinearity and repeatability Height 55.9 cm (22.0 in) ⁵ Upper range limited to saturation Width 50.8 cm (20.0 in) Depth 28.4 cm (11.2 in) Weight 29.5 kg (65 lb) Enclosure rating IP 66, NEMA 4X Packaged dimensions 67 cm x 67 cm x 40.3 cm (26.4 in x 26.4 in x 15.9 in) Shipping weight (monitor only) 31.8 kg (70 lb) Total dissolved gases True Total Dissolved Combustible Gas (TDCG) output is available (∑H2, CO, CH4, C2H2, C2H4, C2H6 in ppm). Each gas is measured at 100 % of detected level. Total hydrocarbons (THC) output is available (∑CH4, C2H2, C2H4, C2H6 in ppm). Each gas is measured at 100 % of detected level. Certifications/Standards Electromagnetic compatibility Specification Test method Gas analysis EN 61326 Class A: 2002 Oil sampling is continuous and gas analysis intervals are user-selectable from 2 hours to 12 hours (default: 4 hours). EN 61326: 2002 Radiated emissions EN 61326: 2002 Conducted emissions EN 61000-3-2: 2000 EN 61000-3-2: 2000 Current harmonics All data is date- and time-stamped. EN 61000-3-3: 2001 EN 61000-3-3: 2001 Voltage fluctuations Up to two years of data stored in memory. EN 61326 Annex A: 2002 IEC 61000-4-2: 2001 ESD Automatic schedule acceleration when rate of change alarm limit is exceeded (default: 1 hour). IEC 61000-4-3: 2002 Radiated immunity against HF field System performs periodic auto-calibration to National Institute of Standards (NIST) traceable gas standard. IEC 61000-4-4: 2004 EFT IEC 61000-4-5: 2001 Surge IEC 61000-4-6: 2004 Conducted RF immunity IEC 61000-4-8: 2001 Magnetic field immunity Alarms IEC 61000-4-11: 2004 Voltage dips and interrupts Two individually programmable relays – 50 VDC or 240 VAC at 3 A max. (125 VDC at 1 A max.). Safety Gas caution & alarm for level (ppm) and/or rate-of-change (ppm/day). IEC 61010-1, IEC 61010-2-81 Power, service event or gas caution and alarm. UL 61010-1 (2nd Edition), UL 60950-1 Clause 6.4 Relay contacts operate as normally open or normally closed. CSA-C22.2 No. 61010-1-04 5 Published by and copyright © 2011 Siemens AG Energy Sector Freyeslebenstr. 1 91058 Erlangen, Germany Siemens AG Energy Sector Transformer Lifecycle Management™ Katzwanger Str. 150 90461 Nuremberg, Germany E-Mail: [email protected] www.siemens.com/energy/TLM For more information, please contact our Customer Support Center Phone:+49 180/524 70 00 Fax: +49 180/524 24 71 (Charges depending on provider) E-Mail: [email protected] Power Transmission Division Order No. E50001-G640-A115-X-4A00 | Printed in Germany | Dispo No. 19200 | c4bs No. 7487 | GB 110380 RP 472247 | WS | 07113.0 Printed on elementary chlorine-free bleached paper. All rights reserved. Trademarks mentioned in this document are the property of Siemens AG, its affiliates, or their respective owners. Subject to change without prior notice. The information in this document contains general descriptions of the technical options available, which may not apply in all cases. The required technical options should therefore be specified in the contract.