MMP

Current Protection:

Thermal-Relay Replacement

Capability of current adjustment

Capability of OFF tine adjustment

Having automatic and lockable operation modes

Specific Capabilities:

Capability of ON time adjustment after fault correction

Motor protector against network disorders

Display signals:

SEQU.: Phase sequence

O.V: Overvoltage (over 440 V)

U.V: Undervoltage (under 300 V)

ASY.V: Voltage asymmetry Cadjustable from 5 to 20%)

©.C : Overcurrent (in ranges 5. 16. 30 and 60 A)

OUT: Output energization (adjustable from 0.5 to 45 seconds)

Installation and Start-Up:

Phases and null have to be connected to terminals T. §. Rand MP respectively. Terminaé 15 and 18 have to be in series with contactor Winding like a stop button. Electic wires should pass through device tubes.

Device starts working upon energization. At the end of chosen delay time (ON DELAY): OUT signal gets ON and device intemal relay opens (intemal contact of terminal 15 to 18s made).

Attention: Every time after fault corection. device starts timing.

Timing does not start where three phases status is not normal.

In the case of fault in three-phase network such as phases reversal. overvoliage (over 440 ‘V). undervoltage (under 300 V) or voltage asymmetry to 20%) . the related fault signal gets ON and at the same time relay closes and out signal gets OFF (internal contact of terminal 15 to 146 is made).

In the case of fault in three-phase network while device starts working. the related signal stays on and the intemal relay does not open.

In the case of motor starting current beyond the limit adjusted by AMPERS potentiom- eter handle, ©.C signal gets ON. lf current fault persists. OUT signal gets OFF and the device intemal relay closes at the end of time adjusted by OFF DELAY potentiometer handle.

 Attention: It should be noticed that starting time duration is adjusted by OFF DELAY potentiometer handle for output not to be de-energized at starting time. In the case of fault correction during the adjusted time. ©.C signal gets OFF and output relay does not close.

When K1 and K? terminals are connected together. device should be restarted by RESET button after current fault comection.

lf K] and K2 terminals ore not connected together. device starts timing after current foult comection. Then. relay opens at the end of time adjusted by ON DELAY potenti- ometer handle.

Technical Specifications:

Network Voliage: 4-wire three-phase 380 V + 10%

Network Frequency: 50 +5 Hz

Internal Loss: About 3 W

Amperage: 1 to 5. 4to 16. 12 to 30 and 24 to 60 A

Output Relay: A Single-C/O contact rekay t+»

Contact Current: 6 A. 220 VAC-6 A. 28 VDC