Description
ABB ZM-32-PKZ2+HI11S-PKZ2 is an electrical protection device composed of the motor protection switch ZM-32-PKZ2 and the circuit breaker HI11S-PKZ2. The following is the detailed introduction:
ZM-32-PKZ2 Motor Protection Switch
Basic Functions
Overload Protection: It can monitor and protect the motor from overload. When the motor current exceeds the rated current for a certain period of time, it will act according to the set inverse time-delay characteristic, cut off the circuit, and prevent the motor from being damaged due to long-term overload.
Short-circuit Protection: It can quickly detect the short-circuit fault in the circuit, trip rapidly when the short-circuit current occurs, and disconnect the circuit to avoid serious damage to the motor and other equipment caused by the short-circuit current.
Underload Protection: When the motor load current is lower than the set underload threshold, the protection switch will act. It can be used to prevent the motor from running under light load or no load, avoiding energy waste and possible equipment abnormalities.
Phase-loss Protection: It monitors the three-phase power supply of the motor. When one or more phases of power are cut off, it will cut off the circuit in a timely manner to prevent the motor from burning out when running under the phase-loss condition.
Phase Unbalance Protection: It detects the unbalance degree of the three-phase current. When the unbalance degree exceeds the set value, it will trigger the protection action to protect the motor from the additional stress and heating caused by the unbalance of the three-phase current.
Features
High-precision Detection: By adopting advanced current detection technology and sensors, it can accurately measure the motor current, ensuring the accuracy and reliability of the protection action.
Adjustable Parameters: Through built-in adjustment knobs or DIP switches, etc., according to the actual parameters and operating requirements of the motor, parameters such as the overload protection current value, short-circuit protection current value, underload protection value, phase-loss protection threshold, phase unbalance threshold, and the delay time of various protections can be flexibly set.
Good Compatibility: It can be used in combination with various types and specifications of motors, and is suitable for the protection requirements of motors with different powers and voltage levels.
Compact Design: It has a small size and occupies little space, making it easy to install in various motor control cabinets or distribution cabinets.
HI11S-PKZ2 Circuit Breaker
Basic Functions
Circuit On-off Control: As the main switch of the circuit, it can realize manual or remote control of the circuit on and off, making it convenient to start and stop the motor and other load equipment.
Short-circuit Protection: It has the function of instantaneous short-circuit tripping. When a short-circuit fault occurs in the circuit and the short-circuit current reaches or exceeds its instantaneous tripping setting value, it can quickly cut off the circuit in an extremely short time, effectively protecting the circuit and equipment from the impact of the short-circuit current.
Overload Protection: Generally, it has a thermomagnetic trip device. According to the principle of the bimetallic strip bending when heated, it responds to the long-term overload current. When the overload current exceeds a certain period of time, it will push the tripping mechanism to act, disconnect the circuit, and achieve overload protection.
Features
High Breaking Capacity: When a short-circuit fault occurs, it can reliably break a large short-circuit current, ensuring the safety of the circuit. Its breaking capacity usually meets the requirements of most industrial and commercial application scenarios.
Stable and Reliable: By using high-quality materials and advanced manufacturing processes, it has good electrical and mechanical properties, can maintain a stable working state during long-term use, and reduce the probability of failures.
Multiple Installation Methods: It supports multiple installation methods, such as rail installation and screw fixing, etc., making it convenient to install and use in different electrical equipment and systems.
Easy to Operate: It is equipped with obvious on-off indication marks, which is convenient for operators to intuitively understand the working status of the circuit breaker. At the same time, the design of the operating handle makes the manual operation easy and convenient.
Combination Advantages
Comprehensive Protection: Combining the functions of the motor protection switch and the circuit breaker, it provides comprehensive protection for the motor, including overload, short circuit, underload, phase loss, and phase unbalance, ensuring the safety of the motor under various operating conditions.
High System Integration: It reduces the space and wiring required for separately configuring the motor protection device
Main brands include: ABB, Bailey, GE, FOXBORO, Invensys TRICONEX, Bentley BENTLY, A-B Rockwell, EMERSON EMERSON, B&R, MOTOROLA, FUANC, REXROTH, KUKA, HONEYWELL, NI, DEIF, Yokogawa, WOODWARD WOODWARD, Ryan, SCHNEIDER SCHNEIDER, Yaskawa, MOOG, EPRO, PROSOFT and other major brands
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