Dairyland Electrical Industries • P.O. Box 187 Stoughton, WI 53589 • 608-877-9900 • www.dairyland.com • [email protected]
Document ID: 4557
SSD Installation Instructions
Published Date: 2019.08.20
Solid-State Decoupler (SSD)
Installation Instructions
ALWAYS RUGGED. ALWAYS RELIABLE.
READ ENTIRE DOCUMENT BEFORE INSTALLING
INTRODUCTION
The Solid-State Decoupler (SSD) is a solid-state DC isolation/
AC grounding (i.e., coupling) device design ed for use in
conjunction with cathodically protected equipment located
in Class I, Division 2 hazardous (classified) locations or
ordinary (non- hazardous) locations. The SSD is suitable for:
(1) decoupling ground mats, (2) AC voltage mitigation, (3) over-
voltage protection of insulated joints and similar structures and
equipment, (4) DC isolation and AC grounding of cathodically
protected structures and electrical equipment in cathodically
protected structures.
The SSD can be used in a variety of different applications,
each of which requires specific installation guidelines.
These installation instructions cover the following common
applications and arrangements.
• Over-voltage protection for insulated joints
• Decoupling gradient control mats
•
Decoupling cathodically protected structures containing
electrical equipment from grounding systems
• AC mitigation
Some applications listed may not apply in some countries
due to different codes and practices. If your application is not
covered by these installation instruc tions, contact Dairyland.
Technical information for applications is available on the
Dairyland website.
Model Number Chart
Note: For EAC products see separate EAC installation manual
available at www.dairyland.com
Certifications
The SSD has been tested by Nationally Recognized Testing Laboratories
(NRTLs) for compliance to independent standards in its operation, ratings,
and construction. Visit our website for Complete Certifications and Listings.
Safety Grounding
UL (United States) and C-UL (Canada) listing for:
NFPA 70 (US National Electric Code - NEC), Article 250.2 and 250.4 (A)
(5), and CSA C22.1-12, Section 10-500 and 10-806. Over-voltage protection
from lightning per ANSI C62.11.
Blocking Cathodic Protection Current
NFPA 70, Article 250.6(E)
Hazardous Location Use
The SSD has been certified for use in Class I, Division 2, Groups A, B, C,
D hazardous locations to:
• NFPA 70 (U.S. National Electrical Code) sections 500-505
• ANSI/ISA 12.12.01-2011
• CSA C22.2 No.213-M1987 (R2008)
The SSD has been certified to ATEX Directive 94/9/EC and IECEx
requirements for use in Zone 2, Group IIC hazardous locations by UL/
DEMKO to: EN 60079-0:2012, EN 60079-15:2010, IEC 60079-0: 6th Ed,
IEC 60079-15: 4th Ed
Blocking Threshold
Choose: 2/2 (Standard)
3/1 (Optional)
AC Fault Current
Choose: 1.2kA
2kA
3.7kA
5kA
Terminal Arrangement
Add “-R” for standard terminal arrangement
Remove “-R” for alternate terminal arrangement*
Lightning Surge Current
Choose 100 for 2kA, 3.7kA, 5kA models
Choose 75 for 1.2kA models
* Note: Alternate terminal arrangement recommended for installation using pin-brazed studs.
Certification System
Leave blank for standard certifications
Add “-EAC” for EAC version for Zone Class 2 Group IIC
