25kV, 3/C Armored Medium Voltage Joint
Straight joint for three-core armored 22-28kV, extruded dielectric shielded power cables

The Innovative Power Products MVJA 3250T series joint is a heatshrinkable system for jointing three-core armored 25kV (22-28kV) extruded dielectric medium voltage power cable. The kit has field control material and heatshrinkable field control tubing to control electrical stress over the connectors and at the shield cutbacks and provide an internal moisture seal. Insulating tubings and shielding tubing reinsulate and reshield the areas over the spliced conductors. Tinned copper mesh and braid reestablish the metallic shielding across the joint. A galvanized steel wraparound case combined with an abrasion resistant black jacketing tube or wraparound jacketing sleeve provide the joint with external moisture seals plus mechanical protection.

MVJA 3250T kits provide a lightweight, compact, and environmentally sealed system for splicing three-core armored extruded dielectric, shielded power cable. These features allow the installation of this jointing system in duct systems,vaults, or in submersible or direct-buried applications. This system provides a total environmental seal; joint failures in flooded vaults are eliminated.

  • MVJA 3250T kits are factory engineered to provide fast and easy installations with reliable performance.

    All MVJ kits are designed to meet or exceed the requirements of the applicable sections of the following cable and cable accessory standards: IEEE-404, IEEE-48, ICEA-66-524, ICEA-66-516, and ANSI C119.2.

  • MVJA 3250T kits cover a wide range of conductor sizes and shapes. They accommodate out-of-round or off-tolerance cables, in both round and sector shaped conductors. The standard kits fit all cable constructions including: metallic tape, drain wire or Unishield® armored power cables. The MVJA 3250T kits can be used for size transitions within the actual kit’s cable use range. Three (3) kit sizes cover armored cable sizes from 2 AWG through 1000 kcmil. When preparing the cable ends, no pencilling of the insulation is required.

Electrical Specifications: 25kV Rated Three-core Armored Joint
Test Requirement
Value MVJA 3250T
AC withstand, 1 minute (60 hz)
52 kV PASS
DC withstand, 15 minutes
100 kV PASS
Partial Discharge (Corona) Voltage (<3pC)
21.6 kV >21.6 kV
Impulse withstand 1.2 x 50 μs (crest kV)
150 kV > 150 kV
AC withstand 1 hour (60hz)
78 kV PASS
AC withstand 5 hour (60hz)
52 kV PASS
Continuous current rating
= Cable = Cable
Cyclical Submersion test (ANSI C119.2)
Pass 52 cycles Pass 52 cycles
Bill of Materials: Std. Pkg.: 1 kit = 1 each, 3/C Armored Joint
Item Description
Quantity Supplied
MVJ 250 Joint (no Jacket)
3 per kit In All Kits
Tinned Copper Braid
3 per kit In All Kits
Constant Force Spring
6 per kit In All Kits
Tinned Copper Mesh
As Required In All Kits
Wraparound Armor Case
1 per kit In All Kits
Black Jacketing Tube or Wraparound Sleeve***
1 per kit In All Kits
Cable Preparation Kit
1 per kit P - Pmod Kit**
Butt-Splice Connector
3 per kit Factory Quoted*
Ground Connectors
As Required Factory Quoted*
Installation Guide
1 per kit In All Kits

  • To download a PDF copy of the data sheet Click here.

    For a complete PDF of the current IPP catalog Click Here. If you would like the catalog in a printed version, please go to the "Catalog Request" page via the link at the top of the page.

The MVJA 3250T kits are individually packaged, three-core armored cable joints. Everything is included to splice one three-core armored cable, with or without grounds less the buttsplice and ground wire connectors. Connectors can be supplied in the kits; subject to factory quote. See section 5 for connector information.

  • MVJ 3250T series: Price List PL-650

25kv Selection Guide
Conductor Range
Catalog #



Length Max.
Connector O.D.
Length Max.
2 - 250 kcmil
MVJA 3251T
0.80 1.20 3.75 1.00 72.0
350 - 500 kcmil
MVJA 3252T
1.05 1.45 5.50 1.35 72.0
750 - 1000 kcmil
MVJA 3253T
1.40 1.85 8.00 1.85 80.0

All dimensions in inches unless shown otherwise

Ordering Information

1. Find your armored cable size in the selection guide above and identify the kit catalog number. This kit will be all that is needed to splice one three-core cable less the phase and ground connectors. Confirm the dimensions when at the extremes of the size range.
2. Add the mod kit letter designation as needed to change the base kit:

P - cable cleaning kit (Pmod)
Example 1:
To splice a 3/C, 25kV, 1 AWG armored cable to the same cable:
MVJA 3251T

  Example 2:
To splice 3/C, 25kV, 350 kcmil armored cable to a 3/C, 25 kV, 300 kcmil armored cable with a cable cleaning kit:

Note: for 28kV joint selection confirm dimensional data.

* CONNECTORS: To have connectors supplied in the kits, please refer to Section 5 in this catalog for connector selection information. The connectors must be ordered separately but can be packaged within the kits if detailed information is supplied.
** Supplied if specified.
*** WRAPAROUND SLEEVE with stainless steel channel– Contact IPP for more information.

QUESTIONS OR QUOTES EMAIL US AT: sales@ippcorp.com or CALL TOLL FREE 1-800-544-4626