- Phase-sequence relays DRR10 measure the sequence of the phases when being switched on and switch - if necessary - the rotation of the field by changing 2 phases.
- The integrated PTC-monitor protects the motor from overheating.
- Applications are especially machines and equipment, that is operated at variable locations e.g. at building sites. Pumps, compressors and vacuum cleaners always run correctly. No
more search for faults or change of wiring necessary.
- automatic change of wrong phase-sequence when connected falsely
- running backward of motors is avoided
- integrated PTC-protection for motor
- enable-input for direct switching on/off of the motor with DRR 10
- max. 3 x 12 A
- switch-on currents 30 A / max. 4 s / 60 A / max. 1 s
- higher currents with external contactors
- integrated protection for relay contacts
- integrated protection from over-temperature
- housing for mounting in fuse-boxes or switchgearcabinets, mounting height 55 mm
Thông số kỹ thuật
- Rated supply voltage Us : 3 AC 400 V, 50/60 Hz < 3 VA
- Tolerance : +10 % ... -20 %
- Inputs : no potential separation from supply
- E1, E2 : potential-free contact for AC 400 V
- T1, T2 : PTC according to DIN 44081 / 44082
- Output relays : 2 x 2 NO-contacts
- Switching voltage : max. AC 440 V
- Thermal current Ith : 12 A
- Switch-on current : 30 A max. 4 s / 60 A max. 1 s
- Rated nominal current Ie (AC 15) : 3 A AC 400 V
- Recommended fuse : gG/gL 16 A
- Expected contact life mech : 30 x 106 operations
- Expected contact life electr : 1 x 10^6 operations at AC 400 V / 3 A ; 2 x 10^5 operations at AC 400 V / 6 A cos φ 0,5