Popular Articles
Can I use a 3 pole MCCB on a single phase system?
Yes. LS UL489 Molded Case Circuit Breakers (MCCB’s) are suitable for use in single phase systems. LS Susol UTE/UTS 3 pole MCCBs may be applied to single phase systems provided that the MCCB is sized appropriately per the given load. Furthermore, ...
H100+ Lead Lag Setup
H100+ drives have a built-in, lead-lag function which allows for redundant motor control using multiple drives with multiple pumps. Also known as "master-follower" or "lead-lag loadshare", this works without the use of an externally controller such ...
What is the difference between differential and non-differential overloads?
For overloads, differential and non-differential types differ in how they trip (release). Differential is considered to be a higher sensitivity relay as it has phase failure detection. When a difference between two or more of the phases exceeds the ...
Setting up PID on an H100 VFD
PID (which stands for Proportional, Integral, and Derivative) control is a process control loop used to regulate a variable such as temperature or pressure. In terms of VFDs, this is usually accomplished with a transducer that provides feedback to ...
VFDs at High Altitude
LS VFDs installed at an altitude of 1000m above sea level or less do not require a derate. VFDs installed at an altitude between 1000 to 4000m require a derate of 3% for every 300m over 1000m. For calculating the derate, please refer to the attached ...