In short. The compressor families publish IP54 and the high-power VFD table publishes IP00. That is not an inconsistency: IP54 describes a machine expected to stand in a plant room, while IP00 describes a chassis component expected to be built into a cabinet that provides the protection. The gap is a statement about how each part is installed, and the cabinet is part of the design rather than an accessory.
What the two digits mean
An IP code carries two digits, defined by IEC 60529. The first covers solid objects and dust, the second covers water. They are independent: a high first digit says nothing about the second, and neither says anything about mechanical impact, corrosion, ultraviolet exposure or operating temperature.
The scheme is also strictly a test classification. It describes what an enclosure was shown to withstand under a defined procedure. It does not describe how long it will keep doing so in a particular plant room, and it is not a durability claim.
IP54 on the compressor
The S, T and H families publish a protection field of IP54.
The first digit, 5, is dust-protected: dust is not excluded entirely, but ingress is limited to a quantity that does not interfere with operation. This is the level normally expected of equipment standing in an industrial space rather than a clean one.
The second digit, 4, covers water splashing against the enclosure from any direction. It does not cover jetting, heavy seas, immersion, or sustained driving rain. In practice IP54 describes a machine that tolerates the conditions of a working plant room — airborne dust, occasional splashing during cleaning or maintenance — and not a machine intended to sit in weather.
IP00 on the drive
The high-power VFD table publishes IP00.
Read as a rating, IP00 claims nothing: no protection against solid objects, no protection against water. Read as a product statement, it is the normal way a chassis drive is described. Drives at this power level are commonly supplied as an open assembly to be built into a control cabinet, because the cabinet is where the environmental protection, the cooling airflow, the cable management and the access control all belong.
The important consequence is that the protection for this part of the system is not supplied with it. It is designed, specified and built by whoever assembles the panel.
What the gap asks of the installer
Once the two ratings are read side by side, the difference stops being a discrepancy and becomes a scope boundary. Three things follow from it.
The cabinet is part of the design. Its protection rating, its thermal design and its filtration all have to be decided against the plant room the equipment is actually going into, and the drive's own published rating gives no help with that decision.
Cooling and sealing pull in opposite directions. A higher-rated cabinet is a more sealed cabinet, and a more sealed cabinet has a harder time rejecting the heat a drive at this power level produces. The resolution is a thermal calculation, not a rating choice made on its own.
Cleaning and maintenance practice should be checked against the compressor's own rating too. IP54 tolerates splashing; it does not tolerate a wash-down regime built around a hose.
What an IP rating does not cover
It is worth being explicit about the questions the code cannot answer, because they are the ones that tend to be assumed. An IP rating says nothing about corrosive atmospheres, about condensation forming inside an enclosure that is sealed against water from outside, about ultraviolet degradation, about ambient temperature limits, or about mechanical impact, which is a separate IK scheme.
Each of those is a real machine-room question, and each has to be raised on its own. The published fields on this site describe what the source catalog states for the components as supplied. They are not a measured result for a delivered machine, and the protection requirements for a specific project are confirmed in writing.
Source basis
Published ChillerRotor catalog protection fields: IP54 for the S, T and H series (CAT-202607-P06/P07/P08) and IP00 in the high-power VFD table (CAT-202607-P12). IEC 60529 defines the rating scheme itself.
Independent standards and regulation
These are external to this catalog and were checked against the issuing body before being cited. They define the method or the rule; they do not validate any value published on this site.
- IEC 60529:1989+AMD1:1999+AMD2:2013 — The standard that defines the IP code itself: what each digit means, the tests that verify it, and the scope — electrical equipment rated up to 72.5 kV. An IP figure is a result of those tests, not a general description of ruggedness.
Catalog values describe the documents this website works from. They are not a performance guarantee for a delivered unit, and project values are confirmed in writing. Read the source policy