M053, NaLA coolBLUE Differential mode line absorber , VFD 1/4-10Hp, 18MM Inner Core

M053, NaLA coolBLUE Differential mode line absorber , VFD 1/4-10Hp, 18MM Inner Core

KEY FEATURES

• Product type: Differential mode line absorber (NaLA®) designed to further reduce VFD-generated electrical noise and peak current values

• Model: NaLA® M-053

• Application range: VFD-driven motors from 1/4 HP to 10 HP

• Function: Reduces differential mode noise and slows high-frequency current components for enhanced motor and system reliability

• System integration: Intended for use in conjunction with CoolBLUE® common mode choke cores, especially for high-reliability applications and motors 10 HP and below

• Installation method: Must be installed around each individual power cable (not grouped together like CoolBLUE® cores)

• Installation location: Load side of the VFD (inverter output) only

• Quantity guideline:
– 150 ft / 50 m cable length: 2 cores
– 300 ft / 100 m cable length: 3 cores
– 450 ft / 150 m cable length: 4 cores
– 900 ft / 300 m cable length: 5 cores

• Thermal rating: Normal operation below 158°F / 70°C; correct core quantity required to avoid overheating

• Reliability benefit: Further minimizes electrical stress on motor insulation and bearings beyond common mode filtering alone

• Maintenance: No maintenance required; solid-core design with long service life

• Typical applications: HVAC systems, pumps, fans, industrial automation, commercial buildings, and other VFD-driven motor installations

CoolBLUE® toroids made from the nanocrystalline material NANOPERM® are
being used increasingly to reduce damaging motor bearing currents in modern
high power inverter systems operating at high switching frequencies. As a result of
these unwanted currents, the bearings corrugate, leading to electrical breakdown
in the lubrication and finally to a standstill of the entire motor.
The use of CoolBLUE® cores not only significantly reduces the over voltage peaks
at the motor terminals, but also suppresses the asymmetrical EMI currents which
are generated by the parasitic capacities of the motor itself together with the motor
cable. In order to achieve an efficient reduction in these destructive effects, one or
more CoolBLUE® cores of suitable geometry have to be placed together over the
connector cables in the DC-link as well as at the inverter output. In this configura-
tion, the cores operate as a common-mode choke.