差動保護繼電器，TEL：159-0057-7130徐工。適用于變壓器、發電機、電動機、單母線以及短引線保護西門子7UT61變壓器保護7UT6121-4EB22-1AA0

西門子7UT61差動保護，主要功能，單側低阻抗零序差動保護，高阻抗零差動保護，靈敏過流保護，負序保護，單側斷路失靈保護，跳閘回路監視。電壓保護等

差動保護7UT6121-4EB22-1AA0原裝正品。支持驗貨，可提供報關單，可含17%增值稅，全國最低價銷售，可以貨比三家再決定購買與否哦！仿貨勿比，請認準是西門子原裝進口公司宗旨： 盡善盡美，至誠至信，樹一流服務。

西門子7UT61差動保護7UT6121-4EB22-1AA0出售的各產品本公司按西門子質保進行保修（保修一年）注：人為或不按使用操作規定使用引起的產品損壞或報廢本公司不承擔任何責任！
請各客戶按照正常的操作安裝指引使用本系列產品！

您買的舒心！用的放心！是我們一直所追求的目標！
歡迎廣大新老客戶來電咨詢訂購。

Differential protection relay 7SJ6001-5EA00-0DA0
Differential protection relay 7SJ6001-4EA00-1DA0
Differential protection relay 7SJ6021-4EB00-1FA0
Differential protection relay 7SJ6025-4EB00-1FA0
西門子7UT61差動保護7UT6121-4EB22-1AA0 
Differential protection relay 7SJ6115-5EB20-1FA0
Differential protection relay 7SJ6125-5EB20-1FA0
Differential protection relay 7SJ6121-5EB20-1FA1
Differential protection relay 7KG6000-8AB
Differential protection relay 7UT6125-5EB01-0BA0
Differential protection relay 7SJ6222-5EB00-1FE0
Differential protection relay 7SJ6225-5EB00-1FE0
Differential protection relay 7SJ6212-5EB00-1FE0
Differential protection relay 7SJ6212-5EB00-1FE1
Differential protection relay 7SJ6215-5EB00-1FE1
Differential protection relay 7SJ6021-5EB00-1FA0   
Differential protection relay 7SJ6025-4EB00-1FA0
Differential protection relay 7SJ6025-5EB00-1FA0  
Differential protection relay 7SJ6021-4EB00-1FA1 
Differential protection relay 7SJ6111-5EB20-1FA0
Differential protection relay 7SJ6005-2EA00-0DA0
Differential protection relay 7VV3002-3CD20
Differential protection relay 7SJ6005-5EA00-0DA0/BB
Differential protection relay 7SJ6005-6EA00-0DB0
Differential protection relay 7SJ6025-5EB20-1FA0
Differential protection relay 7SJ6025-5EB20-1FA0/BB
Differential protection relay 7SJ6825-5EW20-1FE0 微機綜合測控裝置
Differential protection relay 7SJ6115-4EA00-1EA0/JJ
Differential protection relay 7SJ6115－4EB00－1BA0
Differential protection relay 7SJ6115－4EB00－1FA0
Differential protection relay7SJ6225-5EB20-1FC0/EE
Differential protection relay7SJ6225-5EB20-1HG0
Differential protection relay7SJ6225-5EB20-1FE0
Differential protection relay7SJ6125-5EB20-3FA0
Differential protection relay7SJ6025-5EB91-3FA0-L0D
Differential protection relay7SJ6225-5EB90-1FE0-L0A/EE
Differential protection relay7SJ6221-5EB90-1FE0
Differential protection relay7SJ6225-5EB90-1HF0-L0A
Differential protection relay7SJ6222-4EB92-3FD0-L0A
Differential protection relay7SJ6225-5EB92-3HF0+L0A
Differential protection relay7SJ6001-5EA00-0DA0
Differential protection relay7SJ6355-5EB11-3FA0
Differential protection relay7SJ6225-4EB00-1FE0
Differential protection relay7SJ6105-5EB00-1FA0
Differential protection relay7SJ4505-0EA00-0AA1 
Differential protection relay7UM6211-2EB01-0AA0
Differential protection relay7SJ6215-6EB22-1FE0
Differential protection relay7SJ6415-5EB22-1FA1
Differential protection relay7SJ6355-5EB22-3FE0
Differential protection relay7SJ6315-5EB22-1FE3
Differential protection relay7SJ6327-5EB92-3FE1-L0S
Differential protection relay7SJ6327-5EB92-3FE0-L0S
Differential protection relay7KG9661-1FA30-1AA0西門子多功能儀表
Differential protection relay7PA9661-0AA00-2
Differential protection relay7SJ6327-5EB22-3FE0
Differential protection relay7SJ6225-5EB92-1FE0-L0S
Differential protection relay7SJ6225-5EB22-1FE0   24000
Differential protection relay6MD6370-5EB22-0AA0
Differential protection relay7UM6211-5EB22-0HB0
Differential protection relay7UT6351-5EB22-1AA3
Differential protection relay7SJ6222-5EB20-1HH0 7SJ6321-5EB20-3FA0 7UT6131-5EB22-1AA0
Differential protection relay7SJ6025-5EB20-1HA0   13200
Differential protection relay7SJ6105-4EB00-1FA0
Differential protection relay7SJ6825-5EW20-3FB0
Differential protection relay7SJ6001-4EA00-0DA0/BB
Differential protection relay7SJ6121-5EB20-1FA0 
Differential protection relay7SJ6125-5EB20-1FA1
Differential protection relay7SJ6215-5EB00-1FE0
Differential protection relay 7SJ6115-5EB20-3HA0
Differential protection relay7SJ6115-5EB20-3FA0 
Differential protection relay7SJ6215-5EB20-3FE0
Differential protection relay7UT6131-5EB01-1AA0   45261
Differential protection relay7UM6225-5EB22-0AA0
Differential protection relay7SJ6115-4EB10-1FA0 7SJ6821-5EW20-1FE0
Differential protection relay7SJ6821-5EW20-1FE0
Differential protection relay7UM6115-5EB00-0AA0   32000  8-10周
Differential protection relay7SJ6222-2EB90-3FB0-L0A   25900
Differential protection relay7SJ6122-2EB90-1FB0-L0A   24500
Differential protection relay7UM6215-5EB91-0AA0-L0A 7VE6110-5EB01-0AA0
Differential protection relay 7SJ6825-5EW00-3FE0   13900  8-10周
Differential protection relay7SJ8031-5EB90-1FC0-L0A   20592
Differential protection relay7UT6125-5EB90-1AA0-L0A    30576
Differential protection relay7SJ6025-5EB00-1HA0
Differential protection relay7UT6121-5EB20-1AA0
Differential protection relay7SD6105-5BB29-0RB0-M2B
Differential protection relay7SJ6025-5EB21-1HA0
Differential protection relay7SJ6825-5EW00-3HE0
Differential protection relay7VK6101-5EB20-4YN0
Differential protection relay7SJ8031-5EB90-1FA0-L0A
Differential protection relay7SJ8041-5EB90-1FB0 L0A    23296
Differential protection relay7SJ8042-5EB90-1FQ0-L0A      26312
Differential protection relay7RW8020-5EB90-1DA0-L0A
Differential protection relay7UT6135-5EB91-1AC0-L0A   52624
Differential protection relay7SJ8041-5EB90-1FQ0-L0A   26312
Differential protection relay7SD6101-4BB99-3RB1-L0S
Differential protection relay7SJ6411-4EB91-3FA4-L0A  49880  8-10周
Differential protection relay7KG7610-0DD02-0AA0/CC   28350  8-10周
Differential protection relay7KM9300-0AB00-0AA0  
Differential protection relay7VK6105-2EB02-4YN0  40200 8-10周
Differential protection relay7UM6211-5EB22-0HB0
Differential protection relay7SK8012-5EB00-3HD0  15100 8-10周
Differential protection relay7SK8011-5EB00-1HD0   14100  8-10周
Differential protection relay7XV5653-0BA00  12100  8-10周
Differential protection relay7KG6000-8EB    19000
Differential protection relay7SJ8031-5EB20-1FB0  17472
Differential protection relay7KG7660-0BC01-0AA0
Differential protection relay7UM6215-5EB21-0AA0 7UT6121-5EB21-1AA0
Differential protection relay7UT5121-5CB01-0BA0 
Differential protection relay7UT6825-5EB20-1AA0  32000
Differential protection relay7SJ6225-5EB20-3FG0
Differential protection relay7SJ6826-5EW20-3FE0   15500
Differential protection relay7UT6125-5EB21-1AA0
Differential protection relay7SJ6025-4EB90-3HA0-L0D
Differential protection relay7PA2311-0
Differential protection relay7SJ6826-4EW20-3FE0 7SJ6825-4EW20-3FE0
Differential protection relay7SJ6105-5EB00-1FE0
Differential protection relay7PA2742-0AA00-1 7PA2642-1AA00-1 7UT6135-5EB01-1AA0
Differential protection relay7SJ6005-2EA00-1DA0
Differential protection relay7SJ6121-4EB91-1FA0-L0D
Differential protection relay7SJ6221-4EB91-1FE0-L0D 7SJ8041-5EB91-1FB0-L0D 7PA2311-1
Differential protection relay7PA2341-0    2028  8-10周
Differential protection relay7PA2321-1
Differential protection relay7SJ8021-5EB90-1FA0-L0D 7PA2321-0 
Differential protection relay7UT6131-5EB22-1AC3
Differential protection relay7PA2341-1 7PA2351-1 7PA2351-0 7PA2361-0 7PA2361-1 7PA2610-0
Differential protection relay7PA2610-1
Differential protection relay7PA2611-0 7PA2611-1
Differential protection relay7PA2620-0 7PA2620-1 7PA2621-1 7PA2621-0
Differential protection relay7PA2630-0
Differential protection relay7PA2630-1 7PA2631-0 7PA2631-1 7PA2640-1 7PA2640-0 7PA2641-1
Differential protection relay7PA2641-0
Differential protection relay7SJ6215-5EB22-1FE0  7SJ6105-5EB00-1FE0
Differential protection relay7UT6351-4EB22-1BB1
Differential protection relay7SJ8021-5EB26-1FA0  19400  8-10周
Differential protection relay7SJ6211-4EB22-1FC0
Differential protection relay7SA5221-4AB20-0HA0
Differential protection relay7RW6000-4EA00-2DA0     12800
Differential protection relay7VK6111-4AB02-4YC0
Differential protection relay7VK6101-4AB02-4YC0
Differential protection relay7VH6001-0EA10-0AA0
Differential protection relay7UT6131-4EB22-1BB1
Differential protection relay7SJ6211-4EB20-1FE0
Differential protection relay7SJ6102-4EB20-1FB0
Differential protection relay7SJ6111-4EB20-1FA0
Differential protection relay7SJ6111-4EB20-1FA1
Differential protection relay7SJ6212-4EB20-1FF0
Differential protection relay7SA6121-4AB02-4GB4
Differential protection relay7SA5221-4DB20-4HB4
Differential protection relay7VK6111-4AB02-4YQ0
Differential protection relay7SA6111-4AB02-0GP4
Differential protection relay7SA6121-4AB02-5PP5
Differential protection relay7VK6111-4AB90-4YQ0
Differential protection relay7SJ6211-4EB00-1FC0
Differential protection relay7SJ6825-5EW90-3FE0-L0D
Differential protection relay7UM6225-5EB22-0CB0
Differential protection relay7UT6125-5EB90-1AA0-L0D
Differential protection relay7UT6831-5EW22-1AC3
Differential protection relay7UT6135-5EB22-1AC2
Differential protection relay7UT6121-4EB00-1BA0
Differential protection relay7SJ6225-5EB90-3FE0-L0D
Differential protection relay7SJ6211-4EB00-1FB0
Differential protection relay7SJ6111-4EB00-1FA0
Differential protection relay7SJ6005-4BA00-0DB1
Differential protection relay7SJ6111-4EB00-1FA1
Differential protection relay7SJ6821-4EW92-3FE0-L0D
Differential protection relay7RW6000-4EA00-1DA0
Differential protection relay7SJ8031-5EB00-1FB0
Differential protection relay7SA6115-4BB11-3AB7-M1A
Differential protection relay7UT6135-4BB11-1AC0-M1A
Differential protection relay7KG7750-0AA03-0AA0
Differential protection relay7PA2331-1
Differential protection relay7KG7750-0AA03-0AA1
Differential protection relay7PA2732-0AA00-1
Differential protection relay7TS1632-0AA00-1
Differential protection relay7PA2632-0AA00-1
Differential protection relay7PA3032-3AA00-1
Differential protection relay7PA2632-0AA00-2
Differential protection relay7XG2210-1AA00-0AA0
Differential protection relay7UT6331-5EB21-1BC0
Differential protection relay7XG2220-1AA00-0AA0
Differential protection relay7VK6111-4AB21-4YN0
Differential protection relay6MD9111-2CA12-1BA0
Differential protection relay6MD9000-1AA10-7AA0
Differential protection relay6MD9000-0CE00-7MA0
Differential protection relay6MD9000-0CE00-7AA0
Differential protection relay6MD9000-0BA50-7AA0
Differential protection relay6MD9000-0BA40-7AA0
Differential protection relay6MD9000-0BA70-7AA0
Differential protection relay6MD5530-0AA10-2AA0
Differential protection relay6MD9000-0CB02-7AA0
Differential protection relay6MD9000-0CB01-7AA0
Differential protection relay6MD5513-0BP00-7AA0
Differential protection relay6MD5503-0AP00-7AA0
Differential protection relay7PA2231-1
Differential protection relay7PA2331-0   
Differential protection relay7XP9013-0
Differential protection relay7PG1511-2KC70-1CF0
Differential protection relay7SA5221-4CB00-1EB0
Differential protection relay7UT6121-4EB00-1AA0
Differential protection relay7SJ6001-4EA0-1DA0
Differential protection relay7SJ8041-5EB00-1FA0
Differential protection relay7SJ8031-5EB00-1FA0
Differential protection relay7UT6125-4EB90-1AA0-L0A
Differential protection relay7UM6211-2EB91-0AA0-L0A
Differential protection relay7UM6211-2EB91-0AA0-L0D
Differential protection relay7KG7500-0AA01-0AA0
Differential protection relay7SJ6826-5EW20-3HE0
Differential protection relay7SJ6825-5EW20-3HG0
Differential protection relay7SJ6825-5EW20-3FE0
Differential protection relay7SJ6225-5EB20-3FE0
Differential protection relay7KG8000-5BB20-0AD1
Differential protection relay7SJ6022-4EB00-1FB0
Differential protection relay7UT6121-5EB90-1AA0-L0S差動保護
Differential protection relay7VK6105-2EB02-4YN0 重復
Differential protection relay7KG7750-0AA01-0AA0
Differential protection relay7VE6320-5EB12-0CA0-L0A 同步單元，同期裝置
Differential protection relay7SA6115-5BB32-0GR4
Differential protection relay7SD6105-5BB29-0BA0+M2G
Differential protection relay7UT6131-5EB91-1AA0-L0S
Differential protection relay7UT6821-5EW90-1AA0-L0D
Differential protection relay7UM6121-5EB90-0BA0-L0D
Differential protection relay3PP1336-0DZ-K2Y
Differential protection relay7SJ6821-5EW90-3FE0-L0D
Differential protection relay7SJ8041-5EB90-1FQ0-L0D
Differential protection relay7SJ6022-5EB90-1FJ0-L0D
Differential protection relay7SJ6253-6EB92-3FG0
Differential protection relay7SJ6825-5EW22-3FE0
Differential protection relay7SJ6821-5EW00-3FE0/DD
Differential protection relay7SJ6351-5EB00-3FE0/EE
Differential protection relay7SJ6351-5EB00-3FE1
Differential protection relay7SJ6821-5EW00-3FE0
Differential protection relay7UM6225-6EB92-0CB0-L0D
Differential protection relay7SS5220-4AB92-1BA0-L0R
Differential protection relay7UW5010-5CA21跳閘矩陣裝置
Differential protection relay7UM6215-4EB91-0AA0
Differential protection relay7UT6131-6EB92-1BC3-L0D
Differential protection relay7UT6351-6EB92-1BA3-L0D
Differential protection relay7SA6115-5BB22-1CJ4
Differential protection relay6MD6370-5EB20-0AA0
Differential protection relay6MD6335-5EB20-0AA0
Differential protection relay7SJ6226-5EB30-1HF0
Differential protection relay7SJ6325-5EB30-3FE0
Differential protection relay7SJ6025-5EB21-1FA0
Differential protection relay7SJ6825-5EW20-3HE0
Differential protection relay7SJ6325-5EB90-3HF0-L0A/EE
Differential protection relay7SJ6225-5EB90-1HF0-L0A/EE
Differential protection relay7UT6121-4EB20-1AA0
Differential protection relay7SS5220-4AB32-1BA0  母線保護
Differential protection relay7SA6121-4AB22-4FB4
Differential protection relay7VK6111-4AB22-4YQ0
Differential protection relay7SA5221-4CB20-4FB4
Differential protection relay7VK6111-4AB22-4YC0
Differential protection relay7SJ8011-5EB20-1FA0
Differential protection relay7UT6131-4EB22-1BB0
Differential protection relay6MD6351-4EB20-0AA0
Differential protection relay7SJ6411-4EB22-1FA0
Differential protection relay7UM6211-6EB91-0AA0-L0A
Differential protection relay7SJ6221-4EB20-1FE0
Differential protection relay7VE6110-6EB01-0CA0
Differential protection relay7SJ6021-5EB20-3FA0
Differential protection relay7SS5251-5FA01-0AA1
Differential protection relay6MD6631-5EB92-0AA0-L0S
Differential protection relay7SD5221-6AB99-0CJ0-M2G+L0S
Differential protection relay7SD6101-4BB29-0RB0-M1G
Differential protection relay7UM6221-4EB21-3CA0
Differential protection relay7SA6121-4AB22-4CR4
Differential protection relay7XV5662-5AD10
Differential protection relay7SJ6227-5EB62-1FE1
Differential protection relay7SJ6212-5EB62-1FB0
Differential protection relay7SJ6322-5EB62-3HF0
Differential protection relay7UT6135-5EB62-1BA0 1
Differential protection relay7SA6115-5BB62-2GQ4 2
Differential protection relay6MD6645-5EB62-0AA0 1
Differential protection relay6MD6621-5EB62-0AA3
Differential protection relay6MD6635-5EB62-0AA3
Differential protection relay7SS5235-5CA01-0AA1
Differential protection relay7UT6825-6EW91-1AA0-L0R
Differential protection relay7SJ6455-5EB22-3FC7
Differential protection relay7SJ6816-6EW90-3FE0-L0R
Differential protection relay7SJ6225-5EB62-1FE1 1
Differential protection relay7SS5220-5AG93-1FA0
Differential protection relay7SS5220-5AG93-1FA0-L0R
Differential protection relay7SA6115-5BB22-3PQ4
Differential protection relay7XV7507-0CA00  測控開關
Differential protection relay6MD6355-5EB62-0AA0 1
Differential protection relay7SJ6225-5EB62-1FE0 1
Differential protection relay7XV7503-0CA00
Differential protection relay7XV5650-0BA00
Differential protection relay7UT6131-5EB22-1BA0
Differential protection relay7SS5255-5FA01-0AA1 2
Differential protection relay7KG7750-0AA01-0AA1
Differential protection relay7SJ6351-5EB22-3FE0
Differential protection relay7XV7502-0CA00 1
Differential protection relay7XV7500-0CA00 4
Differential protection relay7XV5651-0BA00
Differential protection relay7PA2251-1，40只
Differential protection relay7PA3032-1AA00-1，50只
Differential protection relay7XG2220-5AA00-0AA0，70只
Differential protection relay7PA2351-1，50只
Differential protection relay7PA2241-1，20只
Differential protection relay7SJ6351-5EB00-3FE0
Differential protection relay7UT6121-5EB00-1AA0
Differential protection relay6MD5504-0BP00-6AA0
Differential protection relay6MD9000-1AA20-6AA0
Differential protection relay6MD5514-0BP00-6AA0
Differential protection relay6MD9000-1AA10-6AA0
Differential protection relay6MD9000-0BA40-6AA0
Differential protection relay6MD9000-0BA50-6AA0
Differential protection relay6MD9000-0CE00-6AA0
Differential protection relay6MD9000-0CB05-6AA0
Differential protection relay6MD9000-0CB00-6AA0
Differential protection relay6MD9000-0CC00-6AA0
Differential protection relay7SA6121-4BB91-5PB5-L0S
Differential protection relay7SA5221-4DB92-5QB5-L0S
Differential protection relay7VK6111-4AB91-4YQ0-L0S
Differential protection relay7VK6111-4AB91-4YC0-L0S
Differential protection relay7SD6101-4BB99-0BA0-L0S-M1B
Differential protection relay7SD6101-5BB99-0BA0-L0S-M1B
Differential protection relay7SJ6451-4EB91-3FG0-L0S
Differential protection relay6MD6641-4EB90-0AA0-L0S
Differential protection relay6MD6641-4EB90-0AF0-L0S
Differential protection relay7SS5231-5CA01-1AA1
Differential protection relay7SD6101-4BB99-0BA0-L0S-M2A
Differential protection relay7SD6101-5BB99-0BA0-L0S-M2A
Differential protection relay7SJ6221-4EB90-3FG0-L0S
Differential protection relay7SA6121-4BB92-5PA5-L0S
Differential protection relay7SJ6825-5EW90-3FE1-L0D
Differential protection relay7VK6111-5AB92-4YR0-L0R自動合閘繼電器
Differential protection relay7SJ6821-4EW92-3FE0-L0D
Differential protection relay7SJ6821-4EW92-3HE0-L0D
Differential protection relay7PA3042-3A00-0
Differential protection relay7PA3042-3A00-1
Differential protection relay7PA3042-3A00-2
Differential protection relay7PA2241-0
Differential protection relay7PA2241-1
Differential protection relay7SA5221-4DB00-4NB4
Differential protection relay7SA5221-4DB00-4NP4
Differential protection relay7SJ6826-6EW90-3FE0-LOA型號錯
Differential protection relay7SJ6421-4EB92-3FG4-LOS
Differential protection relay7SJ6422-4EB92-3FD0-LOS
Differential protection relay7UM6211-6EB91-OBAO-LOA 
Differential protection relay7SJ6121-5EB90-1FA0-L0D 
Differential protection relay7UT6121-5EB90-1BA0-L0D  
Differential protection relay7SJ8041-5EB90-1FA0-L0A 
Differential protection relay7SJ8041-5EB90-1FB0-L0A 
Differential protection relay7SJ8041-5EB90-1FQ0-L0A
Differential protection relay7SJ6225-5EB00-1FFO/FF
Differential protection relay7SJ6111-5EB92-1FA0+LOS
Differential protection relay7VK6111-5AB92-4YQ0+LOS 
Differential protection relay7UT6135-5EB02-1AAO
Differential protection relay7SJ6121-5EB90-1FA0-LOD
Differential protection relay7UT6121-5EB90-1BA0
Differential protection relay7SJ6411-5EB92-1FG4
Differential protection relay7KG8000-8AA20多功能儀表
Differential protection relay7KG8000-8BB20
Differential protection relay7SJ6121-5EB90-1FA0+L0D
Differential protection relay7UT6121-5EB90-1BA0+L0D
Differential protection relay7UM6215-5EA21-0BA0
Differential protection relay7SJ6321-4EB20-3FC0/EE
Differential protection relay7SJ6221-4EB20-3FC0/EE
Differential protection relay7SJ6325-4EB20-3FG0/EE
Differential protection relay7SJ6325-5EB20-3FE0
Differential protection relay7SJ8011-5EB26-1FA0
Differential protection relay7SJ6025-5EB90-1FA0/L0A
Differential protection relay7SJ6351-5EB20-3FE0
Differential protection relay7UM6211-6EB02-0BA0
Differential protection relay7UT6131-6EB02-1AC2
Differential protection relay7SA5221-4DB20-4QB4
Differential protection relay7SA6121-4BB22-4PB4
Differential protection relay7SJ6101-4EB20-1FA0
Differential protection relay7SA6111-4AB22-0PR4
Differential protection relay7SJ6211-4EB20-1FC0
Differential protection relay7VH6001-0EA10-1AA0
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7UT6數字式綜合保護系統提供全套主設備差動及其相配合的保護方案，適用于各類型主變壓器,電機和簡單母線(包括短引線)等輸配電系統，具有很強的可靠和靈敏性,調試和維護十分方便,7UT6系列產品主要包括7UT612 (兩組差動CT輸入);7UT613(三組差動CT輸入);7UT633/5(四組及以上差動CT輸入)等,SIPROTEC4系列的7UT6設備具有強勁的開放的通訊能力、完善的現場試驗手段。 7UT6 硬件采用 32位微處理器工藝技術，匯集西門子公司 20多 年的微機 保護經 驗。緊湊型結構具有很好防護、電 磁兼容性，其安裝有廣泛 的選擇性 。DIGSI 4 操作軟件使試驗、日常維護管理非常簡單方便。 保護特征 ? 三段特性的比率式差動過流保護和定時限的差動速斷過流保護,預防嚴重穿越故障的輔助制動電流跳閘特性. ? 二次諧波涌流制動 ? 五次諧波過勵磁制動 ? 直流分量和CT飽和不誤動 ? CT飽和度不同時,不誤動. ? CT斷線閉鎖 ? 大電流變壓器故障快速跳閘近處11ms. ? 變壓器向量組匹配程序 ? 大CT變比不同的匹配程序 ? 主設備保護的輔助功能: ? 諧波制動的兩段相間過流保護 ? 諧波制動的兩段相地過流保護 ? 獨立的兩段中性點接地過流保護 ? 熱過負荷保護 ? 跳閘命令栓鎖功能. ? 外部接點信號輸入,處理或重新輸出外部信號或命令，如瓦斯保護告警/跳閘. ? 通過串行口接入RTD的測溫模擬量至監控系統. ? 各組CT輸入測量值,差動/制動電流值監視. ? WEB 瀏覽各側CT相量和動作特性. ? 四套定值整定 ? 故障錄波功能:電壓、電流、二進制量跟蹤和每相的差動、制動電流等。 計量和控制 ? 實時電流顯示。 ? 四個可定義面板功能鍵，用于保護功能投/退。
 ? 通過面板操作、DIGSI4軟件或所連的控制系統進行就地/遠方的開關、刀閘控制。
 ? CFC 可編程邏輯功能，用戶可自定義信號和 基本邏輯，實現開關連鎖和功 能組合。 通訊功能
? 面板上的PC機接口供給DIGSI 4 視窗操作軟件。
 ? 系統接口與控制網絡連接，適用IEC 60870－5-103, PROFIBUS, MODBUS, DNP3.0等規約。
 ? 服務接口可直接或通過調制解調器連接，實現就地/遠方DIGSI通訊。 ? IRIG－B/SCADA（DCF77）時鐘同步方式。
 應用范圍: 適用于各類型主變壓器,電機和簡單母線(包括短引線)保護�？蓡为毣蚺c其它保護組合配屏，或直接安裝于開關GIS柜體內。