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Spare parts spare parts, the DCS control system of PLC system and the robot system spare parts,

Brand advantage: Allen Bradley, BentlyNevada, ABB, Emerson Ovation, Honeywell DCS, Rockwell ICS Triplex, FOXBORO, Schneider PLC, GE Fanuc, Motorola, HIMA, TRICONEX, Prosoft etc. Various kinds of imported industrial parts

HIMA K9202B Fan components

Compensation of the undervoltage setting is seldom necessary, because the rated voltages of generator and v.t's are generally the same.Inverse time overcurrent (Current-Inv) A. Application Overcurrent function with time delay inversely proportional to the current and definite minimum tripping time (IDMT). B. Features
operating characteristics (see Fig. 3.5.8.1) according to British Standard 142: c = 0.02 : normal inverse c = 1 : very inverse and long time earth fault c = 2 : extremely inverse. RXIDG : logarithmic time characteristic.
insensitive to DC component
insensitive to harmonics
wider setting range than specified in B.S. 142. C. Inputs and outputs I. C.t./v.t. inputs:
current II. Binary inputs:
Blocking III. Binary outputs:
pick-up
tripping IV. Measurements:
current amplitude.Explanation of parameters: RunOnCPU defines the processing unit which runs the function. ParSet 4..1 Parameter for determining in which set of parameters a particular function is active (see Section 5.11.). Trip 01-08 defines the tripping channel activated by the tripping O/P of the function (matrix tripping logic). Trip 09-16 corresponds to Trip 01-08 (providing tripping unit fitted).

Settings: 

Base current IB-Setting Characteristic enabling current I-Start Type of characteristic c-Setting Multiplier k1-Setting The IDMT overcurrent function is used to protect transformers, feeders and loads of the auxiliaries supply system against phase and earth faults. The function responds largely only to the fundamental component of the fault current. Base current "IB-Setting" A tripping current is not set on an IDMT overcurrent function as it is on a definite time overcurrent function. Instead the position of the characteristic is chosen such that it is above the load current. The function, however, has a "base current" setting IB, which is set to the full load current IB1 of the protected unit. The base current setting determines the position of the basic characteristic. The characteristic is enabled when the base current is exceeded by a preset amount (I-Start). The adjustment of the base current IB to the load current IB1 of the protected unit instead of its rated current enables for IB1 < rated current of prot. unit : more sensitive protection IB1 > rated current of prot. unit : maximum utilisation of the thermal capability of the protected unit. Example: Load current of the protected unit IB1 = 800 A