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  • Electronic Relays_Motor protection_Presetting

Presetting

Adjustability from 2 s to 30 s. Information from motor manufactures.

Switches S1...S8
S1
Automatic or manual resetting
The SPEM is always automatically reset, when tripping takes place caused by thermal overload or start-up current protection. Otherwise either manual or automatic resetting.
Manual resetting by operating S1 from manual position to automatic position and back to manual position.

S2
Undercurrent protection OFF/ON
Whether underload protection is required or not.
S3
Alarm/trip from earth fault
Selection of alarm or tripping and alarm.

S4...S8
Full load current (l q) preset.
Operation of dipswitches to ON-position by moving to the right.

Selectable from 60 % up to 122 % with accuracy of + / - 1 %.

Steps are:
60 % (fixed)
32 %
16 %

Earth fault
(SPEM 40_ and SPEM 50_types). Adjustability from 20 % to 60 % of rated zero sequence (SPEM 40_) or residual (SPEM 50_) current.

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