Field testing of some Eaton closed transition ATS's gave paralleling delays in 80-90 msec time window. An alarm is set at 100 msec that stops the process, if need be.
DSP MKII is a ground fault relay. It comes with a grounding resistor. It's the vintage model of the I-gard.
If you have feeder modules, it will tell you which phase is grounded and on which feeder. It leaves you live with one occurring ground fault (Alarm). If you get a second ground fault on a...
This SDP module should be installed right into the switchgear. 8 feet distance is too large and protection is lost. Our manufacturer states a max cable length of 14 in! And we use 30 A breakers. Not much current flows into this, only high voltage transient surges.
Flat short time delay on the tie, while I2t delays on both mains (LV LSIG Breakers). May be a 90% pick up on the tie's long delay, if coordination is that critical. Lastly, consider removing the instantaneous element on both mains while using it on the tie. That's it, almost full coordination...
Ok, it's pretty easy to open the breaker with a remote electrical switch, then remove voltage with the pole switch and then un-rack the breaker. All this without much AF hazard.
The pole-switch is outside and if something happens, the blast will propagate in all directions, meaning it's going to...
What's upstream of that breaker? A switch , a transformer?
It should be easy to use the existant open/close electrical wiring and switch and move them away near the access door. Your breaker is electrically operated already?
Best is to rack-in, rack-out on a de-energized bus, where an upstream...