7 standards and definitions, Standards and definitions, 6 safety manual – JUMO 14597 safetyM STB/STW Ex - Safety Temperature Limiter and Safety Temperature Monitor Operating Manual User Manual
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6 Safety Manual
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6.7
Standards and definitions
Table 2: Terms and abbreviations according to DIN EN 14597
Abbreviation
Explanation
Type 2
Mode of operation for which the manufacturing variation and migration of the operating value, operat-
ing duration, or operating procedure has been checked.
Type B
Micro disconnection in operation, corresponding contact disconnection at at least one pole to
provide functional reliability.
Type D
A free trip mechanism that also cannot be closed temporarily for as long as the error persists.
Type F (STB)
A mode of operation in which, after the RS has been installed, it can only be reset with the aid of a tool.
Type J (STB)
A free trip mechanism with contacts that cannot be prevented from opening and which may not func-
tion as an automatically resetting RS if the means of resetting is held in the "Reset" or "On" position.
Type K
A probe mode of operation in which a probe break or a disconnection between the probe head and the
switching head does not cause the operating value to increase.
Type N
A mode of operation in which the operating value does not increase as a result of a leak in the probe or
in the parts that connect the probe and switching head. This mode is intended for use with electrical er-
ror models.
Type V (STB)
A lockout that can only be reactivated through a manual reset.
Type P
A mode of operation that is effective following a specified test through a change in temperature, as
specified in 17.101 of DIN EN 60730-2-9.