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PMH Pad-Mounted Gear

PMH Pad-Mounted Gear

S&C’s “live-front” PMH Pad-Mounted Gear features directly accessible components which are readily visible during operation of the gear. Operating status is easily confirmed through visible gaps and grounds.

PMH Pad-Mounted Gear is offered in manual, remote supervisory, and source-transfer models.

 

Manual PMH

S&C Manual PMH Pad-Mounted Gear is available in ratings of 14.4 and 25 kV, with switches and fuses in circuit configurations to fit every requirement. Recognized throughout the industry for their exceptional features and long-term value, Manual PMH models include:

  • Readily accessible components. Operating personnel can easily visualize the circuitry and see all components being operated
  • Mini-Rupter® Switches, operated by an external handle, for 600-ampere three-pole switching of source circuits
  • Uni-Rupter® for 200-ampere single-pole switching of tap circuits
  • Comprehensive tap protection with:
  • Grounding provisions for simple, direct, and visible grounding of cables
  • Dual-purpose barriers. Guard against inadvertent contact with live parts in the normal, vertical position; provide isolation from bus and upper contacts in the slide-in position
  • Exceptionally rugged construction and the industry’s finest finish. Provide extraordinary resistance to the elements, keep high voltage components securely isolated from unauthorized access.

Source-Transfer PMH

S&C Source-Transfer PMH Pad-Mounted Gear is a completely self-contained package that provides automatic switching between two sources serving critical loads. It incorporates the same outstanding features as Manual PMH Pad-Mounted Gear, plus stored-energy operators and a sophisticated source-transfer control, which continuously monitors source status and automatically switches to the “good” source if voltage is lost.

Available in ratings of 14.4 and 25 kV, Source-Transfer PMH is recognized throughout the industry for its exceptional features and long-term value. Source-Transfer PMH models include:

  • S&C Micro-AT® Source-Transfer Control. Transfers on loss of source, voltage unbalance, or any source-side open-phase condition. It’s easy to set up. All settings are keypad-programmable; calibration is automatic. Can be furnished with optional communications card to rapidly upload event log to your PC, download standard settings from your PC
  • Built-in voltage sensors and power supply. No external wiring or control power required
  • Mini-Rupter® Switches for manual and automatic 600-ampere three-pole switching of source circuits
  • S&C Uni-Rupter® for 200-ampere single-pole switching of tap circuits
  • Comprehensive tap protection provided by a wide variety of fuses.
  • Exceptionally rugged construction and the industry’s finest finish. Provide extraordinary resistance to the elements, keep high voltage components securely isolated from unauthorized access.

Remote Supervisory PMH

S&C Remote Supervisory PMH Pad-Mounted Gear permits automated switching and provides fault protection. It incorporates the same outstanding features as S&C Manual PMH Pad-Mounted Gear and can be specified with a communication and control equipment group, for a completely integrated, self-powered switching and protection package.

Available in ratings of 14.4 and 25 kV, Remote Supervisory PMH Pad-Mounted Gear features carefully integrated components that ensure compatibility—all factory-assembled and checked-out. Remote Supervisory PMH models include:

  • Your choice of remote terminal unit, including S&C’s 6801 Automatic Switch Controls that provide stand-alone automatic sectionalizing. Available with the unique IntelliTeam® SG Automatic Restoration System.
  • Your choice of communication device.
  • Built-in voltage sensor and power supply. Minimizes enclosure size and installed cost.
  • S&C Mini-Rupter® Switches for manual and automatic 600-ampere three-pole switching of three-phase circuits.
  • S&C Uni-Rupter® for 200-ampere single-pole switching of tap circuits.
  • Comprehensive tap protection provided by a wide variety of fuses.
  • Exceptionally rugged construction and the industry’s finest finish. Provide extraordinary resistance to the elements, keep high-voltage components securely isolated from unauthorized access.

Ratings

Fuse Type 60-Hz Ratings
kV Current, Amperes, RMS Short-Circuit
Fuse with Uni-Rupter Mini-Rupter Switch
Nom. Max BIL Max Load Dropping Cont. Load Dropping Amperes,
RMS Sym.
MVA 3-Phase Sym.
at Rated Voltage
SML-20 14.4
25
17.0
27
95
125
200E
200E
200
200
600
600
600
600
14 000
12 500
350
540
SML-4Z 14.4
25
17.0
27
95
125
200E
200E
200
200
600
600
600
600
12 500
12 500
310
540
Fault Fiter 14.4
25
17.0
29
95
125
200
200
200
200
600
600
600
600
14 000
12 500
350
540

 Consult the nearest S&C Sales Office for 50-hertz ratings.
 SMU-20 Fuse Units are available in ratings through 200K amperes as well as 200E amperes
 Applicable to solidly grounded-neutral systems only, with fuses connected by single-conductor, concentric-neutral-type cable to a transformer(s). Rating is 9,400 amperes RMS, symmetrical (405 MVA) for all other applications.

 

Circuit Configurations

Manual PMH:

PMH-3
Manual PMH-3 circuit configuration

PMH-4
Manual PMH-4 circuit configuration

PMH-5
Manual PMH-5 circuit configuration

PMH-6
Manual PMH-6 circuit configuration

PMH-7
Manual PMH-7 circuit configuration

PMH-8
Manual PMH-8 circuit configuration

PMH-9
Manual PMH-9 circuit configuration

PMH-10
Manual PMH-10 circuit configuration

PMH-11
Manual PMH-11 circuit configuration

PMH-12
Manual PMH-12 circuit configuration

PMH-13
Manual PMH-13 circuit configuration

PMH-19
Manual PMH-19 circuit configuration

Source-Transfer PMH:


PMH-6

Source-Transfer PMH-6 circuit configuration


PMH-9

Source-Transfer PMH-9 circuit configuration

Remote Supervisory PMH:


PMH-3

Remote Supervisory PMH-3 circuit configuration


PMH-5

Remote Supervisory PMH-5 circuit configuration

PMH-6 with 1 or 2
Switch Operators

Remote Supervisory MH-6 circuit configuration

PMH-9 with 1 or 2
Switch Operators

Remote Supervisory PMH-9 circuit configuration

PMH-10 with 1 or 2
Switch Operators

Remote Supervisory PMH-10 circuit configuration

PMH-10 with 4
Switch Operators

Remote Supervisory PMH-10 circuit configuration

PMH-11 with 1, 2, or 3
Switch Operators

Remote Supervisory PMH-11 circuit configuration

For other possible configurations please contact your nearest S&C Sales Office.