Surge Protection for Refineries

OVERVIEW

Today's increased reliance on very sensitive electronics makes surge protection an important topic for Refineries. The Insurance Institute for Business & Home Safety study found that $26 billion dollars was lost due to non-lightning power surges. In addition, there are about 25 million lightning strikes in the US each year that cause between $650M to $1B in losses according to the Insurance Information Institute, State Farm©.

This page discusses how to best protect equipment which might be used for various operations and processeses within the Refinery. Each section will conclude with a Surge Protective Device (SPD) Protection Point which identifies where and what SPD to use.

Recommended SPDs for Emergency Power

Location	Equipment	System	Surge Protector Model #	Link
	Automatic Transfer Switch Line Side / Service Entrance	277/480Vac	MDS600E-277Y
	Automatic Transfer Switch Load Side	277/480Vac	MS100-277Y
	Automatic Transfer Switch Line Side Genset	277/480Vac	MS200-277Y
	Genset Line Side	277/480Vac	M50-277Y-A

Recommended SPDs for Distribution Power

Location	Equipment	System	Surge Protector Model #	Link
	Distribution Panel	277/480Vac	MS100-277Y
	Sub Distribution Panel	277/480Vac	M50-277Y-A

Recommended SPDs for Control Cabinet

Location	Equipment	System	Surge Protector Model #	Link
	VFD AC Input	480Vac (3W+G)	DS74US-480D
	AC Control Power	120Vac	DS240S-120/G
	Battery Backup	24Vdc	DS220S-24DC
	Instrumentation	4-20mA	DLA-24D3
	PLC	Ethernet Ports	MJ8-C6A
	PLC	RS-485	DLA-12D3
	Radio	SCADA	P8AX09-N/FF