Product Description
Mobil DTE™ 700 Series lubricants are the latest addition to the Mobil DTE turbine lubricant family of products, long recognized for their high quality and reliability. Mobil DTE 700 Series are Zinc-Free turbine lubricants specifically designed for use in gas and steam turbine applications. Mobil DTE 700 Series lubricants are formulated with carefully selected basestocks and additives, including antioxidants, rust and corrosion inhibitors and anti-foam agents. These components provide outstanding resistance to oxidation and chemical degradation over time. Mobil DTE 700 lubricants exhibit excellent water separability, resistance to emulsion formation and anti-foaming characteristics which provide reliable operation. Their enhanced air release properties are critical for turbine hydraulic control mechanisms.
The performance features of Mobil DTE 700 Series oils translate into excellent equipment protection helping increase turbine operation reliability, enabling reduced downtime and extended oil charge life. Mobil DTE 700 Series performance is evidenced by its ability to meet or exceed a wide range of industry standards and equipment builder specifications for steam and gas turbines used around the world.
Features and Benefits
Mobil DTE 700 Series offers the following features and potential benefits:
| Features | Advantages and Potential Benefits |
|---|---|
| Meets or exceeds most major turbine equipment builder specifications and industry specifications (ISO VG 32) | Simplifies lubricant selection and applicationAssures compliance with equipment builder’s warrantyMinimize lubricant inventory |
| Superior oxidation, chemical and color stability | Designed to provide extended oil charge life and help reduce oil purchases and disposal costs |
| Helps control deposit formation to help reduce filter plugging and equipment fouling for therefore reducing downtime and maintenance costs | |
| High level of turbine system reliability and reduced unscheduled downtime | |
| Excellent water separability | Helps to insure good lubrication film to protect turbine bearingsMaximizes water removal system efficiency and minimize oil replacement costs |
| Enhanced rust and corrosion protection | Prevents corrosion of critical oil system components for reducing maintenance and prolonging component life |
| Rapid air release and resistance to foaming | Prevents erratic operation, pump cavitation, reducing pump replacement and increasing pump efficiency |
| Zinc Free | Reduces environmental impact |
Applications
Mobil DTE 700 Series are designed to meet or exceed the requirements of circulation systems of steam and gas turbines. Specific applications include
- Electric power generation for high output base load utilities
- Gas Turbine Combined Cycle Power Plants operating in base load or peak generation modes
- Gas turbines in Captive Power plants
- Gas or steam turbine prime movers
- Hydroelectric turbine applications
Specifications and Approvals
| Mobil DTE 700 Series meets or exceeds the requirements of | Mobil DTE 732 | Mobil DTE 746 | Mobil DTE 768 |
|---|---|---|---|
| ASTM 4304 Rev A Type I | X | X | X |
| ASTM 4304 Rev A Type III | X | X | |
| China National Std GB 11120-89 L-TSA | X | X | X |
| DIN 51515-1: 2010-2 | X | X | X |
| DIN 51515-2: 2010-2 | X | X | |
| GE GEK-27070 | X | ||
| GE GEK-28143A | X | X | |
| GE GEK 32568 G | X | ||
| GE GEK-46506D | X | ||
| JIS K-2213 type 2 w/add. | X | X | X |
| Siemens Industrial Turbomachinery MAT 81 21 01 | X | ||
| Siemens Industrial Turbomachinery MAT 81 21 02 | X | ||
| Siemens Westinghouse PD-55125Z3 | X |
| Mobil DTE 700 Series has the following builder approvals: | Mobil DTE 732 | Mobil DTE 746 | Mobil DTE 768 |
|---|---|---|---|
| Alstom Power - HTGD 90117 | X | X | |
| Siemens Power Generation TLV 9013 04 | X | X | |
| Siemens Power Generation TLV 9013 05 | X | X |
| According to ExxonMobil, the DTE 700 Series is of the following quality level: | Mobil DTE 732 | Mobil DTE 746 | Mobil DTE 768 |
|---|---|---|---|
| ISO 8068 L-TGB | X | X | X |
| ISO 8068 L-TGSB | X | X | X |
Typical Properties
| Mobil DTE 700 Series | 732 | 746 | 768 |
|---|---|---|---|
| ISO VG | 32 | 46 | 68 |
| Viscosity, ASTM D 445 | |||
| cSt @ 40°C | 30 | 44 | 64 |
| cSt @ 100°C | 5.5 | 6.8 | 8.6 |
| Viscosity Index, ASTM D 2270 | 117 | 113 | 110 |
| RPVOT, ASTM D2272, minutes | 1000 | 1000 | 1000 |
| TOST, time to 2.0 NN hours, ASTM D943, hours | 10,000 | 10,000 | 8,000 |
| Neutralization Number,mg/KOH g ASTM D974 | 0.10 | 0.10 | 0.10 |
| Pour Point, °C, ASTM D 97 | -30 | -30 | -30 |
| Flash Point, °C, ASTM D 92 | 228 | 230 | 242 |
| Density@15°C, kg/l, ASTM D 1298 | 0.85 | 0.86 | 0.87 |
| Foam Sequence I, mL ASTM D892 | 0/0 | 0/0 | 0/0 |
| Foam Sequence II, mL ASTM D892 | 0/0 | 0/0 | 0/0 |
| Foam Sequence III, mL ASTM D892 | 0/0 | 0/0 | 0/0 |
| Air Release, 50 C, mins,ASTM D3427 | 2 | 3 | 4 |
| Demulsibility, @54C, time to 3ml emulsion, ASTM D1401, minutes | 10 | 10 | 10 |
| Rust Protection, ASTM 665B | pass | pass | pass |
| Copper Corrosion, ASTM D130 | 1B | 1B | 1B |
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