Pfisterer DOC | Dry Outdoor Composite Cable Terminations (HV 132kV 170kV)

Pfisterer DOC Dry Outdoor Composite Cable Terminations (HV 132kV 170kV)

Pfisterer DOC HV 132kV 170kV

Self-supporting Dry Outdoor Composite Termination Up To 170kV

Electricity networks have to be cost-effective and safe. For a hundred years now, PFISTERER’s technology and High Voltage Cable Accessories have fulfilled both of these requirements.

With the new DOC (Dry Outdoor Composite) termination, PFISTERER offers a self-supporting, dry and compact termination up to 170kV – the high voltage cable termination reliably connects power cable systems with overhead lines and busbars in maintenance-free long-term use.

Dry PFISTERER outdoor cable terminations have been used worldwide for decades in substations and on high-voltage transmission towers connecting cable systems to overhead lines and busbars with long-term reliability. For time-critical installation projects with the future in mind, PFISTERER now offers DOC available from Thorne & Derrick – the first dry, self-supporting high voltage power cable termination.

Fast and safe installation, with environmentally friendly technology

Cable Terminations Installed in minutes, not hours

The DOC central unit, comprising a hollow insulator, stress grading device and base plate, is delivered to the site fully preassembled and tested. Compared to conventional high voltage terminations, the modular design of the PFISTERER DOC simplifies handling during transportation and installation.

The central unit simply pushes onto the HV cable – the number of elements to be fitted is minimised, time-consuming gluing work and drying phases are eliminated entirely. The conductor is connected quickly and reliably using SICON shear bolt technology.

PFISTERER also offers FrontCon – a highly advanced connection solution for single-strand insulated conductors.

Self-supporting dry outdoor composite termination up to 170 kV

Top connection
Bolted connector
SiR main insulation
Stress grading device
Integrated base plate
Bottom fixing and sealing
SMART clamp
Earthing point

Sicon – Extremely reliable connection with patented SICON stepless shearbolt lug technology.

Silicone – The stress grading device is implemented exclusively with silicone. The cable termination longevity is proven.

SMART Clamp – The SMART clamp simplifies and standardises screening work and creates a reliable contact between the cable screen and an earthing point.

Cable Termination Benefits

No oil, gas or gel insulating medium
Fast and reliable installation (horizontal or vertical) cable terminations
Whole HV termination is routine tested (IEC 60840 Clause 9)
Integrated base plate
Fixed earthing point for simpler screen handling
Explosion-resistant cable termination
Maintenance-free cable connections
Proven material for HV systems and power networks
Proven high voltage materials technology
No liquid handling on site

Pfisterer Doc Technical Specifications

Contact Thorne & Derrick for assistance with the Design, Specification, Selection or Supply of HV Cable Accessories to enable the jointing, termination, connection or sealing of power cables at 66kV/132kV/170kV – Thorne & Derrick also distribute the most extensive range of MV Medium Cable Joints, Terminations & Connectors (11kV/33kV) from manufacturers including 3M, Prysmian, Nexans Euromold, Elastimold, Pfisterer CONNEX & SEANEX.

Heat shrink, cold shrink, push-on and slip-over cable accessories enable the jointing, terminating and connection of 11kV-33kV and 66kV cables to oil, air or gas insulated switchgear, transformers, turbines, motors and overhead lines distributing electricity at medium/high voltages.

More High Voltage Cable Terminations from PFISTERER

PFISTERER Part Number	Um [kV]	BIL [kV]	PD at 1.5 U0	IEC 60815 IEC 60815-3
DOC123-C39	123kV	550	<5pC	IV, E
DOC145-C45	145kV	650	<5pC	IV, E
DOC170-C58	170kV	750	<5pC	IV, E

Completely preassembled and fully routine tested, DOC cuts installation time from hours to minutes

Enhanced High Voltage safety with full system testing and preassembly

Solid-insulated and lighter than conventional oil or gas-filled terminations, dry outdoor cable terminations by Pfisterer have been used worldwide for decades. Their silicone solid insulation ensures environmental and operational safety as well as durability in use in substations and on overhead power lines, with no risk of leakage. With the new DOC (Dry Outdoor Composite) termination, Pfisterer now also offers the first self-supporting, dry and compact version up to 170kV. Reliable and maintenance-free in long-term use, it connects high voltage cable systems to overhead lines and busbars.

Testing under IEC 60840 Section 9 is carried out on the whole central unit, instead of (as is usual) only on the stress grading device. Pfisterer is currently the sole manufacturer to offer this full testing. DOC also meets all criteria of the highest pollution class according to IEC 60815-3 – therefore the high voltage cable termination suitable for areas with high levels of dust, even deserts.