Supply to 3 phase DB tripped

[James]

Power data logger can be hired independently and set up to monitor the supply for a week or two.

Also, for a quick check, if there is any it equipment.
The logs from ups systems can be really helpful.

 

[UKMeterman]

Hi,
Try some of the 3 phase kit from here. Hire Energy Monitors and Power Analysers | Hire | Inlec - https://www.inlec.com/electrical-test-equipment/energy-monitors-power-analysers