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United States
Tel: 901.252.8000
800.816.7809
Fax: 901.252.1354
Technical Services
Tel: 888.862.3289
www.tnb.com
H-63
Elastimold
®
Fused Loadbreak Elbows (FLE)
Power & High Voltage —
Elastimold
®
& Hi-Tech
®
Fuse Products
Combined full-range current-limiting fusing 15/25kV
hotstick-operable, loadbreak elbow switching quickly
improves the distribution system’s reliability without the
expense of adding a separate piece of switchgear or
replacing existing sectionalizing cabinets
Current-limiting fuses improve the fault close rating of the
elbow (10kA) to that of the fuse, thereby reducing the risk
of component damage or personnel injury
EPDM molded rubber deadfront construction enables elbows
to be fully sealed and submersible, and they insulate, shield
and eliminate exposed live parts
Two-piece housing enables easy fuse replacement
Replace existing 200A tap elbows with Elastimold
®
Fused Elbows to protect
light-duty underground distribution systems, including sub-loops, radial taps,
junctions, transformers and other equipment.
Elastimold
®
Fused Elbows provide full-range current-limiting fusing with
50kA interrupting capability. They are rated for 5kV ungrounded to 28kV
grounded Wye. Plus they provide 15/25kV hotstick-operable, loadbreak
elbow switching.
Ratings
System Voltage Class (kV)
15
25*
25/28*
Nominal Fuse Voltage (kV)
8.3
15.5
17.2
Rated Maximum Fuse Voltage (kV)
8.8/10
15.5
17.2
Frequency (Hz)
50/60
50/60
50/60
BIL Impulse Withstand (kV)
95
125
140
One-Minute AC Withstand (kV)
34
40
45
Fifteen-Minute DC Withstand (kV)
53
78
78
Corona Extinction (kV)
11
19
21.5
Symmetrical Interrupting Capability (Amp)
50,000
50,000
50,000
Current Rating (Amp)
3–80
6–20
3–45
Application Information
Construction: Submersible, non-venting, deadfront, corrosion resistant
Ambient Temperature Range: -30° C to 65° C­
* The 15.5kV L-G rated fuse requires 75% grounded load to be applied on a 25kV system.
The 17.2kV L-G rated fuse requires at least 75% grounded load to be applied on a
28kV system.
Note:
Fuses are only suitable for the system voltage class shown if the recovery voltage
across the fuse will not exceed its rated maximum voltage. For three-phase
applications, this generally requires that protected transformers be gndY–gndY
and have at least 50% grounded load. Fuse replacement requires the elbow
to be de-energized.
Lower Elbow Half
Hose Clamp
Bi-Metal Crimp Lug
(08605XXX)
Fuse
Probe Lug
(2000-103)
Upper Elbow Half
Probe
(166 LRF or 274 LRF)
Certified Tests
Elastimold
®
Fused Elbows have been designed and
tested per applicable portions of IEEE, ANSI and
other industry standards, including:
ANSI C37.40
Standard for Current-Limiting Fuse
Service Conditions
ANSI C37.41
Standard for Current-Limiting Fuse
Design & Testing
ANSI C37.47
Standard for Current-Limiting Fuse
Ratings & Specifications
IEEE 386
Standard for Separable Connectors
The fastest, most cost-effective way to
improve a distribution system’s reliability.
Elastimold
®
Fused Elbows