GE Industrial Solutions Tranquell Series Low and Medium - Manual (Page 6)

2020005003 (12/09) Page 6 of 18
PRE-INSTALLATION REQUIREMENTS:
Prior to energization of the GE Tranquell SPD, it is critical that the following items have been
addressed.
DO NOT ATTEMPT TO ENERGIZE THE SPD OR CONTINUE WITH THE INSTALLATION IF
ALL OF THESE CONDITIONS HAVE NOT BEEN MET, OR ARE UNKNOWN.
1. SYSTEM CONFIGURATION AND VOLTAGE
Check the configuration and voltage supply ratings to ensure that the proper SPD model
number has been selected for your system. The SPD model number can be found on the UL
label affixed to the SPD NEMA Enclosure. The SPD selection can be verified by comparing the
Model Number to the correct electrical system described in the “VOLTAGE RATINGS & POWER
SOURCE CONFIGURATIONS” chart shown on page 7.
2. SYSTEM GROUNDING AND BONDING
Verify that a NEC (National Electrical Code) compliant X0 bond has been made at the
upstream transformer or other separately derived system that feeds the SPD. Per NEC
Article 250.30, this bond must be in place on all 3-Phase WYE, 3-Phase Hi-Leg Delta, and
Single Phase Split-Systems. Refer to page 8 for an example of an installation that complies
with these NEC recommendations.
Verify that there have not been multiple instances of Neutral to Ground bonds on the
electrical system. These bonds, while either intentional or accidental, result in Ground
currents that can create differential voltage potentials between Neutral and Ground.
Redundant Neutral to Ground connections can result in damage to the SPD and are in
violation of NEC.
3.
SPD INSTALLATION ON UNGROUNDED POWER SYSTEMS
Ungrounded power systems are inherently unstable and can produce excessively high line-
to-ground voltages during certain fault conditions. During these fault conditions any
electrical equipment, including an SPD, may be subjected to voltages which exceed their
designed ratings. This information is being provided to the user so that an informed decision
can be made before installing any electrical equipment on an ungrounded power system.
4.
SPD LOCATION / PRIMARY OVERCURRENT PROTECTION
Per the National Electrical Code (NEC Article 285), Type 2 SPDs may be placed only on the
load side of the main service breaker or fuse at each utility service entrance or separately
derived power system.
WARNING
THE EQUIPMENT COVERED BY THESE INSTRUCTIONS SHOULD
BE INSTALLED AND SERVICED ONLY BY COMPETENT,
QUALIFIED PERSONNEL UTILIZING PROPER SAFETY PRACTICES
AND PROCEDURES THESE INSTRUCTIONS ARE WRITTEN FOR
SUCH PERSONNEL AND ARE NOT INTENDED AS A SUBSTITUTE
FOR ADEQUATE TRAINING AND EXPERIENCE IN SAFE
PROCEDURES FOR THIS TYPE OF EQUIPMENT.
WARNING
FAILURE TO PROVIDE THE X0 BOND WILL DAMAGE THE
SPD AND VOID THE PRODUCT WARRANTY.