An Application Guide
From the Experts in
Business-Critical Continuity™
Full Facility Surge Protection – Water/Wastewater
Application Guide
Water/Wastewater or Fish Hatchery Controls
Your PLCs, panel board controllers, network devices, flow meters...are susceptible to noise, low-voltage
transients, and surges from lightning strikes.
Emerson Network Power Surge Protection builds low-voltage surge suppressors which provide clean power to
all your sensitive equipment, preventing downtime and contamination at your facility.
The 120VAC power and 4/20mA signals of transmitters, recorders and flow devices at water treatment plants
require surge suppressors that are specifically designed for high exposure locations in the water/wastewater
environment.
The Edco™ SS64 and SS65 Series are multi-stage hybrid suppressors that address overvoltage transients with gas tube and silicon avalanche technology. In addition, sneak and fault
currents are mitigated with PTC devices. The units are encapsulated in stainless steel pipe
nipples making them suitable for use in severe environments. The Edco™ SS65 unit protects a
signal pair (4/20mA) plus the cable shield (drain wire).
The Edco™ SLAC-12036 combines hybrid AC power protection and 2-pair signal line
protection in a NEMA-4X polycarbonate case. The AC power suppressor has a 15-Amp
replaceable fuse to prevent overloading of the protective elements. A “Power On” LED
provides visual indication that power is applied to instruments.
Type of Device
Part Number
DP Transmitter, Pressure DR – ¾” Pipe – 2 sides for 4/20mA signals
SS64-036-2
DP Transmitter, Pressure DR – ¾” Pipe – 1 side for 4/20mA signals
SS65-036-2
Meter & Instrumentation – 120VAC, 30VDC
SLAC12036
Edco SS64 &
SS65 Series
Edco SLAC Series
IEEE Standard
IEEE Standard 1100 - 9L.1.6.3 “if surge protection is required for
a building or factory, parallel-connected devices may be
sufficient to proactively stop high-energy transients from
mitigating downstream. On the contrary, if a susceptible or
critical piece of equipment needs to be protected from
transients or isolated from induced high frequency, than a series
connected filter may be the better choice.”
IEEE Standard 1100 - 4.4.5 Potential impact of EMI: “Depending
on the severity of the surge and the susceptibility of the
equipment, three types of occurrences are possible…data
disruption, hardware stress, and hardware destruction.”
Water/Wastewater Application Diagrams
100 Emerson Parkway
Binghamton, NY 13905
P (607) 721 8840
P (800) 288 6169
F (607) 722 8713
E contactsurge@emerson.com
AG-22020
Rev. 1 1/13
EMERSON NETWORK POWER SURGE PROTECTION INC MAY UPDATE OR
REVISE PRICING AND PRODUCT INFORMATION AT ANY TIME PRIOR TO
RECEIPT AND ACCEPTANCE OF A CUSTOMER ORDER. SUCH UPDATES OR
REVISIONS SHALL BE COMMUNICATED ELECTRONICALLY TO CURRENT
REPRESENTATIVES. DAYS TO SHIP MAY VARY DUE TO SIZE OF ORDER.
ADDITIONAL PRODUCT DESIGNS ARE AVAILABLE, PLEASE CONTACT THE
FACTORY FOR ASSISTANCE.