Description
1. Description
CKPM**1 is a protection relay based on a microprocessor
environment. It is mainly designed to protect the power equipment
of *5kV and below, such as overhead line, cable line, busbar,
electromotor, transformer, etc.
2. Technical Feature
â—CKPM**1 uses single chip system, its CPU contains the parts
of microprocessor-based resource, such as FLASH ROM,RAM, EEPROM, AD
converter, timer, serial port, etc. Due to all connections with the
external device is implemented by I/O ports and use various
measures for isolation, so CKPM**1 can use fewer components, work
more stably and with strong anti-interference ability.
â—CKPM**1 has all-metal construction, with simple &
rationalization design, and the panel is made of aluminum material
with one-step casting. What is more, its depth is just *0mm which
is tiny and space-saving for installation.
â—The high voltage and low voltage components are strictly
separated by the hardware design
â—CKPM**1 and all external connecting parts adopt isolating
treatment
â—Both of below parts adopts shielding method to prevent
high-frequency interference.
***-input/output parts of analog via transformer
***-input/output parts of switch power
***-digital input parts
â—Both of below parts uses the specialized components to
prevent EFT interference, which makes CKPM**1 has the excellent
performance to prevent transient interference.
***-analog input
***-digital input
***-power input
***-communication interface
â—High-precision clock chip
â—High-precision CT
â—Both of tripping relay and signal relay uses high-power
electromagnetic relay
â—Breaker control circuit with monitoring function
â—Transformer protection function
â—Wide input voltage for power module
â—Watchdog design
â—Big LCD display and utility menu operation, it is very
conveniently to use and operate
â—Fault indication and record function
â—Software with module design
â—Communication connection
