ABB RER620, Technical Manual

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Section 4
1MAC309294-MB F
Protection functions
130 RER620
Technical Manual
Table 145: Reset time characteristics supported by different stages
4.1.3.7 Application
51N/50N or 51G/50G is designed for protection and clearance of ground faults in
distribution and sub-transmission networks where the neutral point is non-grounded
(-23) Recloser E (132) x x
(-24) Recloser F (163) x x
(-25-Recloser G (121) x x
(-26) Recloser H (122) x x
(-27) Recloser J (164) x x
(-28) Recloser Kg (165) x x
(-29) Recloser Kp (162) x x
(-30) Recloser L (107) x x
(-31) Recloser M (118) x x
(-32) Recloser N (104) x x
(-33) Recloser P (115) x x
(-34) Recloser R (105) x x
(-35) Recloser T (161) x x
(-36) Recloser V (137) x x
(-37) Recloser W (138) x x
(-38) Recloser Y (120) x x
(-39) Recloser Z (134) x x
50N/G-3 supports only definite time characteristics.
For a detailed description of timers, see the General function block features
section in this manual.
Reset curve type
Supported by
51N/G 50N/G-1/2 Note
(1) Immediate x x Available for all reset
time curves
(2) Def time reset x x Available for all reset
time curves
(3) Inverse reset x x Available only for ANSI
and user programmable
curves
The Type of reset curve setting does not apply to 50N/G-3 or when the DT
operation is selected. The reset is purely defined by the Reset delay time
setting.
Operating curve type supported by 51N/G 50N/G-1 50N-G-2