In May 2010, Ebara Corporation (manufacturer) and Ebara Techno-Serve Co., Ltd. (distributor) will release the surface pump model SSLD. It employs a permanent magnet synchronous motor (PM motor), and is the first model of a new pump series that adds energy-saving functions to standard pumps.

　This model provides greatly improved performance and efficiency by driving a newly developed pump based on Ebara’s hydraulic analysis technology with a PM motor that is more efficient than the IE3¹ efficiency level defined by the IEC standards¹. It is equipped with a dedicated inverter as standard and allows the rotational speed to be set according to the conditions in which it is to be used. By packaging the dedicated inverter and sensors for rotational speed control, including constant pressure control, the amount of energy consumed can be reduced by 50% or more² compared with Ebara’s conventional induction motor pumps. The lower running costs means that although the SSLD model will cost more than the conventional products, the price difference can be recovered in about three years².

＜Product outline＞
- Model: SSLD³ （PM motor-driven in-line pump model）
- Bore size: 32 to 50 mm
- Output: 1.5 to 3.7 kW
- Planned sales price: 515,000 yen (for standard specifications with a bore size of 50 mm and an output of 3.7 kW)

SSLD

　To make it easier to run pumps more economically and with less CO2 emissions, Ebara will develop a new pump series that aims to save energy. Following model SSLD, Ebara plans to market the SE (Save Energy) series which include surface pumps, submersible pumps, and booster units based on a combination of high-performance pumps, high-efficiency induction motors (equivalent to the IE3 efficiency level defined by the IEC standards), and inverters. Among the products in the SE series, those using PM motors that are even more efficient than high-efficiency induction motors will be offered as the SSE (Super Save Energy) series, and provide industry-leading energy-saving performance. The new energy saving series will be released only in Japan for the time being. Some models of energy saving series will be launched in other countries this fiscal year, and the lineup of the series will be extended, step-by-step.

　The Ebara Group has developed energy-saving products in connection with standard pumps. In addition to releasing the new series that will meet customers’ needs for energy saving, Ebara will make further efforts to develop products relieving global warming and reducing environmental burdens.

1	The IEC standards are established by the International Electrotechnical Commission, which develops international standards in the fields of electrics and electronics.  The IEC standards include those defining motor efficiency levels, and the efficiency of JIS C 4212: Low-voltage three-phase squirrel-cage high-efficiency induction motors have an efficiency equivalent to the IE2 efficiency level defined by the IEC standards.  IE3 indicates an efficiency level higher than that of IE2.
2	The comparison is based on the following assumptions, and the comparison results may vary depending on the model and the conditions in which the product is used: - An SSLD model product having a bore size of 50 mm and an output of 3.7 kW is compared with our conventional models operated with valve control. - The non-standard part load value (NPLV) used for chillers is applied to the pump operation pattern. (100% load: 1%, 75% load: 42%, 50% load: 45%, and 25% load: 12%. 100% load = maximum flow of our conventional models. Actual head = 20 m. In the case of rotational speed control, the head varies along the resistance curve. The performance of the SSLD model is that of the prototype.) - Operating time: 12 hours a day, 365 days a year (4,380 hours a year). Electric utility rate (Japan): 13 yen/kWh (excluding basic charges).
3	The SSLD model is included in the SSE series.