Siemens Sm@rt DAS 사용자 설명서 - 페이지 21

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Chapter 5

Commissioning/Troubleshooting

Commissioning - VL Sm@rt DAS

 Review drawings to identify the location of Sm@rt DAS

switches or HMI. The elevation will show the location of

the switches/HMI highlighted in Figure 5.6.

 The electrical view will show the breakers with Sm@rt

DAS highlighted in Figure 5.7.

 Starting with the VL breakers, go to the trip unit, scroll

and select "View parameter screen". Then select "View

protection" and then scroll through and review

instantaneous pickup. It should be set to either the

default settings, which are the minimum, or the settings

input by the user.

 Turn the DAS switch "on" for the VL breaker. The blue

light should then come on. Then refresh the

instantaneous pickup setting by scrolling up or down on

the keypad. Scroll back to review the instantaneous

settings. They should be 1.25x the breaker rating or the

settings set earlier into the controller. The preset values

for short time delay are 100ms and short time pickup is

1.25x the breaker rating.

 If the VL maintenance modes are changed, always test

maintenance mode and verify the new maintenance

mode settings on the VL.

Figure 5.6: Location of switches and lights

Figure 5.7: Location of circuit breakers with DAS