System Overview
CNIK-750The microcomputer protection and measurement device is suitable for small current grounding systems with voltage levels of 35KV and below. It can be used for routine protection such as line protection, transformer protection, capacitor protection, motor protection, PT parallel and measurement control, and backup power self switching.
CNIK-750 Functional Features
◇ Panel material: Aluminum profile with metal wire drawing surface treatment
◇ Special material: High gloss imported acrylic glass
◇ LCD: 128 * 64 LCD display screen, indicator light: tri color fog LED light, button: silicone button
◇ Panel size: 212mm * 180mm
◇ Input: 14 passive, output: 7 relay outputs
◇ Analog quantity acquisition: IA、IB、IC、3IO、UA、UB、UC、3UO
◇ Measurement current and protection current share protection current CT
Power supply: AC/DC 220V ± 20% or 110V ± 2% (ordering supports DC48V)
◇ Adaptive frequency range of 45~665HZ
◇ switchable between Chinese and English
◇ Input and output can be easily customized
Protection function
◇ Quick break protection |
◇ Long start protection |
◇ Time limited quick break protection |
◇ Positive sequence overcurrent protection |
◇ Overcurrent protection |
◇ Undervoltage protection |
◇ Overload protection (timed limit, inverse time limit optional) |
◇ Zero sequence overvoltage protection |
◇ Zero sequence overcurrent protection |
◇ Non electricity protection |
◇ Negative sequence overcurrent protection |
◇ PT disconnection alarm |
◇ Overheating protection |
◇ CT disconnection alarm |
◇ Do not restart due to overheating |
◇ Control circuit disconnection detection |
◇ Blockage protection |
|
Typical wiring
