Supply ABB ICMK14N1 smart module card inventory

Description

ICMK14N1 With the interval timer disabled, apply the current signal and slowly

increase its magnitude until the trip relay (and all the selected auxiliary

relays) operate.

If the relay under test has a very inverse ICMK14N1 time characteristic, it is easier and more accurate

to increase the current far above the pickup level until the trip relay operates, then reduce

the current to just above the expected operate level.

 Slowly reduce the current below the operate ICMK14N1 level and observe for a

reset action on the trip relay.

This current reset level should be approximately 98% of the pickup

level setting. Once the relay drops out, slowly increase the current until

the trip contact closes. The operate level should correspond to the S4

ELEMENTS  NEUTRAL OC  W1 NTRL TIME OC  W1 NEUTRAL

TIME OC PICKUP setpoint: Since current is being introduced into one

phase only, the input current signal is equal to the 3Io signal used by the

element.

 When the element operates, check that the Trip, Pickup, and Phase

LEDs are on and one of the following messages is displayed:

LATCHED a: W1 Ntrl Time OC or OPERATED a: W1 Ntrl Time OC

Reduce the current until the element resets.

The reset level should be 97% of the ICMK14N1 operate level. When the element

resets, the Trip and Message LEDs should remain on if the W1

NEUTRAL TIME OC TARGET was selected as Latched. Otherwise only

the Trip LED remains on.

 Reset indicators and clear messages.

7.5.7.4 Operating Time

 Using a table like the one shown below, select three (3) or four (4)

values of current multiples at which timing is to be measured.

 Enter the expected operating times from the timing curve applied in the

settings.

 Using the setup in FIGURE 7–9: General test setup on page 7–25 and

the interval timer enabled, set the current level to the desired value and

apply suddenly by closing the double-pole switch.

 Record the operate time and compare ICMK14N1 to the expected value.

 Repeat for all desired values of current.

7.5.7.5 Reset Time

A precise measurement of the reset time requires a relay test set capable of dynamic

operation, with three sequenced stages, each with programmable current levels and time

duration, and flexible external contact triggering. To perform such a test, contact GE

Multilin for detailed test instructions.

A simple verification of the reset mode selected by S4 ELEMENTS  NEUTRAL OC  W1

NTRL TIME OC  W1 NEUTRAL TIME OC RESET is obtained using the setup shown in

FIGURE 7–9: General test setup on page 7–25. The test consists of repetitive operating time

measurements in quick succession. If the reset is set for “Instantaneous”, the operating

time is always equal to the nominal time derived from the selected curve. If the reset is set

as “Linear”, the operating time varies as a function ICMK14N1 of the time between successive

applications of current. The variations in operating time are easier to detect if this test is

performed at current multiples of 2 to 3 times the pickup level.

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