CITEL M50-120T-B

120/240Vac, 3W+G, Split Phase for Wastewater Treatment

M50-120T-B for WWT Header

M50-120T-B for WWT Middle

Field and Control level Equipment in harsh industrial environments are at risk from overvoltages caused by direct and indirect lightning strikes as well as power system switching transients. To assure up-time and reliability of operations a comprehensive approach to protection is required. CITEL, your partner in surge protection, stands ready to apply our expertise and knowledge in protecting all your wastewater treatment equipment.

Surge Protection for Fire Pump Stations

OVERVIEW

NEC-2020 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 (Dormitories, Homes, Hospitals, Hotels), etc. This article will focus on Critical Power Systems and how they are defined by NFPA 70 Article 708.

What are Critical Operations Power Systems (COPS)

As stated by Article 708, Critical Operations Power Systems can be classed by municipal, state, federal, or other codes by any governmental agency having jurisdiction or by facility engineering documentation establishing the necessity for such a system. These systems include but are not limited to power systems, HVAC, fire alarm, security, communications, and signaling for designated critical operations areas.

Article 708.2 further defines how the end user can identify if the system is a COPS.

Category	Article 708.2 Definitions
Critical Operations Power Systems (COPS)	"Power systems for facilities or parts of facilities that require continuous operation for the reasons of public safety, emergency management, national security, or business continuity.”
Designated Critical Operations Areas (DCOA)	"Areas within a facility or site designated as requiring critical operations power."
Supervisory Control and Data Acquisition (SCADA)	"An electronic system that provides monitoring and controls for the operation of the critical operations power system. This can include the fire alarm system, security system, control of the HVAC, the start/stop/monitoring of the power supplies and electrical distribution system, annunciation and communications equipment to emergency personnel, facility occupants, and remote operators."

Recommended SPDs for Emergency Backup Power

Equipment	System	Surge Protector Model #	Link
Automatic Transfer Switch Line Side	120/208Vac	MDS600E-120Y
Automatic Transfer Switch Load Side	120/208Vac	MS100-120Y
Automatic Transfer Switch Line Side Genset	120/208Vac	MS200-120Y
Genset Line Side	120/208Vac	${ITEM_LINK#1505161}<-No Item, #1505161 M50-120Y-A	${ITEM_LINK#1505161}<-No Item, #1505161
Genset Relay Starter	24Vdc	DS220S-24DC
Genset Battery Charge Controller	120Vac	DS240S-120/G

Recommended SPDs for Pump Station

Equipment	System	Surge Protector Model #
MCC	480Vac	MS100-480D
VFD Input	480Vac	DS74US-480D
VFD Output	480Vac	M50-480D-A

Recommended SPDs for Fire Pump Controller

Equipment	System	Surge Protector Model #	Link
Power Supply Input	120Vac	DS240S-120/G
Power Supply Output	24Vdc	DS220S-24DC
Pump Controller	24Vdc	DS220S-24DC
Instrumentation	Pressure Instrumentation 4-20mA	DLA-24D3
Instrumentation	Flow Instrumentation 4-20mA	DLA-24D3
PLC	Ethernet Ports	MJ8-C6A
PLC	RS-485	DLA-12D3
RTU	RF Coaxial	${ITEM_LINK#1314}<-No Item, #1314 P8AX09-N/FF	${ITEM_LINK#1314}<-No Item, #1314