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© 2020 ASCO Power Technologies. All Rights Reserved
6
IO-70071
01/2020
For access to self-service tools and chat support visit se.com/us/en/work/support or call 1-888-778-2733 for technical assistance
ASCO Model 950 Surge Protective Device (SPD) and Fuse Box
Introduction
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
• Proper installation is required to maximize performance. Please follow
steps outlined herein.
• Read this Installation, Operation & Maintenance Manual in its entirety
prior to beginning installation.
• These instructions are not intended to replace national or local codes.
Follow all applicable electrical codes.
•
Installation of the Model 950 should only be performed by qualified
electrical personnel familiar with 1kV to 5kV systems.
Failure to follow these instructions will result in death or serious injury.
Thank you for choosing an ASCO Surge Protective Device (SPD). This is a
high quality, high energy surge current diversion system designed for use
with equipment that is sensitive to damaging transient voltage surges.
Proper installation is important to maximize performance. Please follow
steps outlined herein.
This Installation, Operation & Maintenance Manual should be read in its
entirety prior to beginning installation. These instructions are not intended
to replace national or local codes. Follow all applicable electrical codes to
ensure compliance. Installation of the Model 950 should only be performed
by qualified electrical personnel familiar with 1kV to 5kV systems.
ASCO’s Medium Voltage SPDs are extensively tested in accordance with
industry standards such as ANSI/IEEE C62.11.
This unit is a Single-port Parallel-connected Three Phase Fuse
Box designed for installation on medium voltage (1000V up to 4160V) switch
gear at service entrance and downstream applications for IEEE Category C,
B, or A locations.
DANGER
Introduction
General Information
Product Family Outline
Note:
For access to self-service tools and chat
support visit se.com/us/en/work/support or call
1-888-778-2733 for technical assistance
Model 950 – Medium Voltage Surge Protective Three Phase Fuse
Box
The 950 consists of a Medium Voltage Parallel SPD and stand-alone, Three
Phase Fuse Box. The 950 is designed for Oil & Gas, Water/Wastewater,
Chemical, Large Industrial & Heavy Duty Applications at Service Entrance,
Distribution locations as well as Individual Equipment. The Three Phase
Fuse Box component of the 950 is REQUIRED to be installed on the line-
side of, and in-line with, the medium voltage SPD component as dedicated
overcurrent protection and to disconnect the SPD from the electrical system
in the event the SPD reaches end of life. The 950 comes available in 5
voltages & 120 or 240kA per phase. See Model Number Decoder in Table 1.