35kV 600A/900A Junctions
IS635/935JCT
Installation & Operating Instructions
IS635/935JCT Rev. D 03/21 IS635/935JCT Rev. D 03/21
Important: Read these instructions thoroughly before operating the system. Be sure that
the connectors are rated for the intended energized use. Visually inspect parts for damage
before using.
! CAUTION
The equipment covered by these instructions should be installed, operated and serviced only by competent personnel
trained in good safety practices. This instruction is written for such personnel and is not intended as a substitute for
adequate training and experience in safe procedures for this type of equipment.
! DANGER
All apparatus must be de-energized during installation or removal of parts. Do not touch or move energized product by
hand. Failure to follow this instruction may result in serious or fatal injury, as well as damage to the product.
Remove all protective shipping caps and replace with an approved insulating cap or connector prior to the junction being
submersed or the circuit energized. The protective shipping caps are intended to keep the interfaces clean during shipping
and handling and should never be used on energized equipment.
! DANGER
These instructions do not purport to cover all details or variations in equipment nor to provide for every possible contingency to be
met in connection with installation, operation or maintenance. Should further information be desired or should particular problems
arise which are not covered suciently for the purchaser’s purposes, the matter should be referred to Hubbell Power Systems, Inc.
©2021 Hubbell Incorporated.
Because Hubbell has a policy of continuous product improvement,
we reserve the right to change design and specifications without notice.
Printed in the U.S.A. | TD_03_059E
1850 Richland Ave. East • Aiken, SC 29801 | Phone: 573-682-5521
Fax: 573-682-8714 | E-mail: hpsliter[email protected]
hubbellpowersystems.com
hubbellpowersystems.com
DESCRIPTION
Hubbell 600A/900A junctions are designed and tested
to meet all requirements of IEEE Std. 386. When mated
with appropriate accessories, they can create taps,
loops, and splices in URD systems and are fully shielded
and submersible. They are typically installed in vaults
or sectionalizing cabinets and are available in three and
four position versions.
35kV class: 21.1kV
STEP 6 – INSTALLATION – JUNCTIONS WITH U-STRAPS
Step 1 – Determine Location
Identify location for the junction assembly. Mark the location for the junction assembly using the U-strap
holes as a template.
Step 2 – Mount Deadbreak Junction
Attach deadbreak junction to a flat metallic surface* using the U-strap(s) provided. Use 5/16” diameter
screws and 5/16” split lock washers. Tighten securely to prevent movement during operation.
Important: The base of the deadbreak junction conductive jacket must be grounded via contact with the
conductive mounting surface.
STEP 7 – OPERATING INSTRUCTIONS
Remove all protective shipping caps and wipe the operating interfaces clean. Lubricate each interface
with the supplied lubricant or an approved equivalent. DO NOT SUBSTITUTE. Other lubricants may be
harmful to this product or a mating connector.
Install the mating products following the instructions supplied with the mating product.
NOTES:
If a position is not to be used, cap it o with an approved insulating cap. Do not use the protective
shipping caps for this purpose as they are only intended to keep the interfaces clean during shipping and
handling.
DO NOT energize or submerge the apparatus with the shipping caps installed.
CONTENTS OF PACKAGE
(1) Multi-Point Junction
(1) SS Bracket and Mounting or U-straps
(1) Installation Instructions
(1) Lubricant – one per interface
DO NOT SUBSTITUTE
INSTALLATION TOOLS
• Hand tools
TITLE
SIZE
DWG NO.
CAT / PART / ASSY NO.
REV
DO NOT SCALE
THIS DRAWING
DRN BY
DATE
SHEET
SB
600 A 35 kV DEADBREAK-JUNCTION
U-STRAPS
HUBBELL POWER SYSTEMS, Inc.
635JXU
0
1 OF 1
11/26/2018
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--
POWER SYSTEMS, INC
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2/1/2019
REV DATE
1850 Richmond Ave East
Aiken, SC 29801
Phone: 803-648-8386
www.Hubbellpowersystems.com
600 A 35 kV Deadbreak Junction
Conforms to all Requirements of IEEE Std. 386 - Latest Revision
Conforms to all Requirements of IEEE Std. 386 - Latest Revision
Ratings
Maximum Continuous Voltage...........21.1 kV Phase-to-Ground
Continuous Current...........................600 A
Overload Current 4 hour rating...........900 A
___________________________________________________
Short-Time Current Ratings
0.17 Sec. Duration......................25,000 A rms Symmetrical
3.00 Sec. Duration......................10,000 A rms Symmetrical
___________________________________________________
Insulation Withstand Voltages
Basic Impulse Level.................150 kV Crest
(1.2 x 50 µSec. wave)
60 Hz (60 Sec.)......................................................50 kV rms
Partial Discharge Extinction Voltage (5 pC)................26 kV rms
___________________________________________________
Production Tests
100% factory tested for Partial Discharge and either AC 60 Hz
(45 kV for 60 Sec.) or Impulse (BIL) (125 kV 1.2 x 50
µ
Sec. wave).
4.00
"A"
1.81
6.89
3.465.00
INTERFACES COMPLIES WITH
IEEE STD. 386 INTERFACE 13
5/8-11 UNC - 2B
4" or 6"
X CATALOG # POINTS A
3 635J3U 3 11.5
4 635J4U 4
15.5
Figure 6
L1 L2
4” or 6”
Number of
positions
Spacing
Catalog No.
A L1 L2
600A 900A
2
4" 635J2U 935J2U 7.50" 5.00" 3.46"
6" 635J2XLU 935J2XLU 9.00" 4.63" 3.00"
3
4" 635J3U 935J3U 11.50" 5.00" 3.46"
6" 635J3XLU 935J3XLU 15.00" 4.63" 3.00"
4
4" 635J4U 935J4U 15.50" 5.00" 3.46"
6" 635J4XLU 935J4XLU 21.00" 4.63" 3.00"
INSTALLATION –
JUNCTIONS WITH BRACKETS
Step 1 – Attach Bracket Feet
Loosely attach bracket mounting feet to
the adjustable mounting brackets using
supplied 5/16” hardware. See Figure 1.
NOTE:
Bracket mounting feet can be aligned to
face either the inside or outside direction
based on the location and spacing of the
mounting holes on the wall.
Step 2 –Attach Adjustable Brackets
Align junction frontplate with adjustable
mounting brackets ensuring that the
desired angle has been obtained. Securely
attach bolts once the proper mounting
angle has been achieved.
See Figure 2.
Step 3 – Mounting Dimensions
Refer to Figure 3 and Table 1 for mounting
dimensions.
NOTE:
Adjustable mounting brackets can be
attached with the feet pointing out or in.
Step 4 – Tighten and Ground
Locate the full junction assembly to the final position, mark the attachment locations on the mounting
surface, and tighten the bracket mounting feet hardware in this final position. Drill holes at the marked
locations if required, and securely attach the full junction assembly to the mounting surface using
customer supplied hardware. See Figure 4.
NOTE:
Bracket and Clearance Spacing based
on feed-thrus in the parking stands.
(See Fig.4) Allow sucient space for
elbow operation.
CLEARANCE REQUIREMENTS:
• Vault Wall (Dimension A) or
Enclosure (Dimension B)
• 35kV = 3.25”
Step 5 – Tighten and Ground
Securely tighten all connections from previous assembly steps and assemble ground clamp to either
of the connection points provided on the front plate. Connect the bracket to system ground with the
grounding clamp. See Figure 5.
NOTE:
Ground clamp can accommodate wire sizes of #6 to 1/0 stranded.
! WARNING
Failure to properly ground the 600A/900A junction may lead to the presence of hazardous voltage, which can result in
serious injury or death.
IS635/935JCT Rev. D 03/21 IS635/935JCT Rev. D 03/21
Figure 1
Figure 4
Figure 2
Figure 5
Figure 3
9.56
Number of
positions
Spacing
Catalog No.
X1 X2 B1 B2 B3
600A 900A
2
4" 635J2B 935J2B 15.10" 7.50" 3.40" - 8.40" 7.90" - 13.30" 12.80" - 17.80"
6" 635J2XLB 935J2XLB 17.08" 9.00" 5.40" - 10.40" 9.90" - 15.70" 15.20" - 20.20"
3
4" 635J3B 935J3B 23.00" 11.50" 7.50" - 12.50" 12.00" - 17.00" 16.50" - 21.50"
6" 635J3XLB 935J3XLB 26.00" 15.00" 11.40" - 16.40" 15.90" - 21.70 21.20" - 26.20"
4
4" 635J4B 935J4B 27.00" 15.50" 11.50" - 16.50" 16.00" - 21.00" 20.50" - 25.50"
6" 635J4XLB 935J4XLB 32.00" 21.00" 17.40" - 22.40" 16.90" - 27.70" 27.20" - 32.20"
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