MBMP Microprocessor-Motor Protection Relays

Introduction: It is a Microprocessor Based Motor Protection Relay. It offers protection against overloading, underloading apart from protection against Phase Failure, Phase Unbalance & Phase Sequence Faults. It is best suitable for protection of individual 3 phase LV / HV Motor of higher ratings with additional Under Voltage / Over Voltage, Earth Fault & Over temperature Protections. Microprocessor Based circuit makes it more comprehensive & effective. It eliminate conventional bimetal (thermal) overload relay with superior protection level. It is used for motors with Current Sensor CTS. It is recommended for effective Motor Protections in Machine Tools, Compressors & Pumps.

Features: · Microprocessor Based Motor Protection · IDMT Current Sensing Electronic Overload. · Programmable ON Delay, Trip Delay, Reset Delay. · 4 Digit LED error display with front keys. · Operates on separate AC Auxiliary Supply. · Multiple Protection sensing 3 phase voltage, Motor Current,Winding Temperature. locked rotor (stalling), earth fault. · Power ON Delay (0-5 min.). · Suitable with Minilec External Current Sensors & 5A CTs. · Password protected settings. · Panel Flush mounted enclosures (Control Unit + Monitor Unit.

Application Areas: NA

Technical Specifications:

Sr. Parameter Specifications 1 Supply Voltage System 380/415/440 V AC ±20% 50/60 Hz ±3%; Auxiliary 110 / 240 /240 V AC 2 Output Relay Contact 1 CO 3 Input Minilec Current Sensor CTS (for 5/10/20/40/80/120 A) or ext. 5A CT with Minilec Current Sensor CTS 05 E/F CTS 10 with 3 nos. 5A CT 4 Power Consumption 3 VA 5 Settings Power ON Unbal/Ph.Rev Under Voltage Over Voltage Unbal. Current Overload Stalling Earth Fault Winding Overheat 6 Trip Level – 30 - 70 V 70 - 95% 105 - 120% 50% of I FLC 1.2 - 6 of I SET >8 x I SET 0.1 - 2 Amps PTC loop>4KW 7 Trip Delay – 3.5secs. ±1.5 secs. 2 - 10 secs. 2 - 10 secs. 3.5secs. ±1.5 secs. IDMTL (2 sec) <500ms <500ms <2secs. 8 Error Message – ERR 5 ERR 6 ERR 6 ERR 4 ERR 5 ERR 2 ERR 1 ERR 7 9 Reset Mode – Auto Auto Auto Auto Auto/Manual Manual Manual Auto 10 Temperature 0 0 –5 C to +55 C 11 Humidity Up to 95% Rh. 12 Dimensions (mm) Unit Overall (L x W x D) 216 x 166 x 147 mm + 216 x 116 x 147; Panel mounting (L x W) 203 x 153 mm + 203 x 153; CTS Overall (L x W x D) 76 x 38 x 113; Mounting (L x W) 68 centre to centre 13 Approx Weight Unit 2500 gms; CTS 320 gms for CTS 10, CTS 40, 300 gms for CTS 20 & 370 gms for CTS 80