1.NOR7 50HZ Thermal Relay Application
NOR7 50HZ thermal relay is suitable for overload protection of AC motor operated on 8-hours duty oruninterupted duty. The overload protected AC motor with frequency 50Hz, voltage up to 660V,current up to 38A. Several functions provided by these relays are: phase-failure protection,temperature compensation. The product conforms to IEC60947-4-1 stardand.
2.Motion Characteristic: Three-phase Balance Motion Time
No Times of the setting current Motion time Start condition Ambient temperature 1 1.05 >2h Cold state 20±5oC 2 1.2 <2h Heat state (Following the No.1 test) 3 1.5 <4min 4 7.2 10A 2s < Tp ≤10s ≤63A Cold state 10 4s < Tp ≤10s >63A
Type Setting range (A) NOR7-20 0.6~1.11 1.11~1.66 2.5~3.7 1.62~2.5 3.7~5.6 5.6~8.4 8.4~11.9 11.9~16 16~23 23~27 27~33 33~38
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