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Reliable, time-tested capacitor units for use as building blocks in power quality solutions

Capacitor units are building blocks for any power quality solution to mitigate issues like low power factor, voltage variations and harmonics. Hitachi Energy’s CLMD range of capacitors offers such rugged and flexible building blocks to build such solutions for most challenging environments.

Made with first-class components developed in-house by Hitachi Energy, CLMD is available in a wide range of ratings to suit the need of each individual customer. Optimally designed capacitor elements, built around a high-performance metallized film, ensure low energy losses. Sheet steel enclosure provides high degree of safety for the capacitor unit as well as the solution. The use of dry type dielectric minimizes the risk of leakage and contamination, while a ‘self-healing’ combination of electrode and dielectric ensures safe operation in case of an internal fault. Robust terminals minimize the risk of damage during installation and reduce maintenance requirement.

  • Compliant with global standards like IEC 60831 and equivalent, CLMD capacitors play a significant role in improvement of power quality and reduction in energy costs through many ways, for example:
  • Reducing or eliminating expensive utility penalties for low power factor 
  • Reducing power losses in cables and transformers
  • Increasing power transmission capacity in cables
  • Increasing available transformer capacity
  • Improving voltage stabilization in long cables


CLMD capacitors are used in power quality solutions for industrial and commercial networks, especially in case of challenging environments, like:

  • Mining and minerals industry
  • Chemical, oil & gas (COG)
  • Offshore exploration platforms
  • Ports and marine vessels
  • Pulp and paper
  • Other industries

Why Hitachi Energy?

The low-voltage dry capacitors CLMD offer customers best-in-class reliability, flexibility and peace of mind, thanks to:

  • Dry type design
  • Unique sequential protection system
  • Hitachi Energy in-house metallized film giving excellent dielectric properties
  • Heavy-duty enclosure
  • Long life
  • High reliability
  • Comprehensive range
  • Light weight, easy to install
  • Complies with international standards, CE marked
  • Environment friendly
  • Very low losses
Brief performance data
Connection 3-phase (single-phase available on request)
Voltage range From 220 V to 1000 V
Net output power Up to 130 kvar
Reactors Combinations with reactors possible
Discharge resistors Safe discharge to less than 50 V in 1 minute
Protection degree IP42 (IP52 on request)
Case material Zinc electroplated mild steel
Execution Indoor
Maximum ambient temperature +55°C
Minimum ambient temperature -25°C
Losses <0.5 Watt/kvar for 380 V rated voltage and above
Tolerance on capacitance 0% + 10%
Altitude Up to 1000 m

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