Multifunction Overcurrent & Motor Protection Relay Block 7SJ602 With (1NO)

Features and technical specifications:

1. Motor Protection
2. CT inputs : 4 No’s
3. 3 current + 1 voltage transformers
4. Binary inputs : 3 No
5. Binary output’s : 4 NO
6. External DC power supply required
7. RS 485 Communication Port

The following functions are available

1. Feeder protection :-
• Over current-time protection
• Sensitive ground-fault detection
• Directional sensitive ground-fault detection
• Displacement voltage
• Disk emulation
• Overload protection
• Breaker failure protection
• Negative-sequence protection
• Cold load pickup
• Auto-reclosure
• Trip circuit supervision

2. Motor protection :-
• Starting time supervision
• Locked rotor
• Restart inhibit
• Undercurrent monitoring
• Temperature monitoring

3. Control functions :-
• Commands for control of a circuit-breaker
• Control via keyboard, DIGSI 4 or SCADA system

This Multifunction Over current & amp Motor Protection Relay Block is easily insert in your schematic diagram and connect as you like way.

ground-current detection two versions are available: One version with four current transformer inputs for non-directional earth (ground) fault detection and a second version with three current inputs (2 phase, 1 earth/ground) and one voltage input for directional earth (ground) fault detection. The flexible communication interfaces are open for modern communication architectures with control systems. The SIPROTEC 7SJ602 is a numerical over current relay which, in addition to its primary use in radial distribution networks and motor protection, can also be employed as backup for feeder, transformer and generator differential protection. The SIPROTEC 7SJ602 provides definite time
and inverse-time over current protection along with overload and negative sequence protection for a very
comprehensive relay package. In this way, equipment such as motors can be protected against asymmetric and excessive loading. Asymmetric short-circuits with currents that can be smaller than the largest possible load currents or phase interruptions are reliably detected. The integrated control function allows simple control of a circuit-breaker or dis connector (electrically operated/ motorized switch) via the integrated HMI, DIGSI or SCADA.