CITEL, Surge Protectors for Industrial sites

The equipment used in your manufacturing facilities are very sensitive and vulnerable to lightning and switching surges. The cost of fully surge protecting an industrial plant is limited and provides peace of mind that your system will be operational when you need it most.

OBSTA

AC MAIN PANEL

DLA-48D3

UL497B LISTED - Imax 20kA - In 5kA - Modular

LINKING AUTOMATION

MSP-VM12

MJ8-POE-C6A

Indoor Cat. 6A 10Gb/s rated POE Surge Protective Device & Mounting Hardware Kit

CCTV CAMERA

DS74US-277Y/G

UL TYPE 1 SPD - Imax 75kA - In 20/30kA - Modular Assembly

MLPXUVG-277S

LED SPD - Imax 20kA - In 10kA - 120-277Vac 2 wire + ground

LED LIGHTING

AC SUB PANEL

MS200-277Y

DLA-24D3

UL497B LISTED - Imax 20kA - In 5kA - Modular

ACCESS CONTROL

DS230S-48DC

FIRE ALARM

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Surge Protection for Industrial Machinery

NFPA 79 Industrial Machinery in a metal workshop

The latest release of NEC/NFPA 70 edition 2020 (NEC 2020) has placed a greater emphasis on increasing personnel safety by mandating the use of Surge Protective Devices (SPDs).

From 2014 to 2020, the number articles now requiring SPDs has increased significantly for applications ranging from Modular Data Centers, Fire Pumps, Elevators, Critical Power Systems, Dwellings (Dormatories, Homes, Hospitals, Hotels), etc.

Threat to industrial machines

Various codes and standards possess safety interlock criteria including the American National Standards Institute (ANSI) standards and NFPA 79 for Industrial Machinery. However, until now, these standards have only just begun to address the expanding role that surge protection plays preserving the integrity of equipment and, more importantly, protecting the lives of personnel.

A study commissioned by the Fire Protection Research Foundation, “Data Assessment for Electrical Surge Protective Devices”, provides results of a survey of facility managers concerning surge damage. (NFPA 2014) The study shows that 26 percent of facility managers had damage to safety interlocking systems on industrial machines due to surges . The main purpose of these safety interlocking systems is to protect workers and maintenance personnel from contact with exposed live parts and electric shock. Failure of these devices can put personnel at an increased risk of injury.

CNC lathe

The solution for NFPA 70 and NFPA 79

To make the installation of a Surge Protective Device (SPD) at the industrial machines interlocking safety circuit mandatory which in turn increases the equipments reliability.

In addition, the future NFPA 79 is considering the following changes:

as well as

Selecting an SPD for Industrial Machinery

NEC/NFPA 70 require that Surge Protective Devices (SPDs) shall be UL1449 Listed . This means selecting a surge protector is easier than it has ever been. There are only a few choices available for SPDs that are UL Listed for any of the most commonly used surge standards including UL1449 5th Edition, UL497B, and UL497E.

Recommended SPD for Industrial Machines

Location	Equipment	System	Surge Protector Model#	Link
Service Entrance	Main Service Panelboard	277/480Vac	MDS750E-277Y
Branch Panel	Equipment Panelboard	480Vac	M50-480D-A
Local Equipment	Control Panel	480Vac Power Input	DS74US-480D
	Power Supply	120-240Vac Power Input	DS72US-230S/G
		24Vdc Power Output	DS220S-24DC
	Control Unit	Ethernet Cat 6A	MJ8-C6A
		4-20mA	DLA-24D3
		Wireless	P8AX09-6G-N/FF

Types of machines covered by NFPA 79

10108 USA Today Way Miramar, FL 33025 USA	Contact us to develop a surge mitigation solution for your application
www.citel.us	Where to purchase Citel SPD's

Standard and Electric Code References for Surge Protective Devices