f Siemens Protection Relays SIPROTEC Compact Series SIPRPTEC 7SK81- A&S Automation Co., Ltd
 
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  • Address: 469 Xinsheng Road, Gaoxin District, Chengdu, China
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The SIPROTEC Compact 7SK81 provides 4 low-power current transformer inputs and optionally 3 low-power voltage transformer inputs. With the same low-power current transformer (LPCT) a wide range of primary rated line currents can be covered. Objects with rated currents in the rangefrom 20 A to 2500 A can be protected when using low-power current transformers. The following low-power current transformer ratios are suitable for the following primary current operating ranges:300 A/225 mV for a primary operating current range of 60 A to 630 A; 600 A/225 mVfor a primary operating current range of 120 A to 1250 A; 1250 A/225 mV for a primary operating current range of 250 A to 2500 A; 100 A/225 for a primary operating current range of 20 A to 200 A; The SIPROTEC 7SK81 is a multi-functional motor protection relay. It is designed for protection of asynchronous motors of all sizes. The relays have all the required functions to be applied as a backup relay to a transformer differential relay. The relay provides numerous functions to respond flexibly to the system requirements and to deploy the invested capital economically. Examples for this are: exchangeable interfaces, flexible protection functions and the integrated automation level (CFC). Freely assignable LEDs and a six-line display ensure a unique and clear display of the process states. In combination with up to 9 function keys, the operating personnel can react quickly and safely in any situation. This guarantees a high operational reliability.

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Siemens Protection Relays SIPROTEC Compact Series SIPRPTEC 7SK81- A&S Automation Co., Ltd

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