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MEB Main Earthing Busbar StSt Stainless Steel
MOV Metal Oxide Varistor T Transformer Cabinet
MT Measuring Transducer TCU Telecommunications Connection Unit
MV Medium Voltage TE Transmission Equipment
NT Network Termination TMA Tower-Mounted Amplifier
NTBA Network Termination for ISDN Basic Rate Access TO Telecommunications Outlet
OFC Optical Fibre Cable TOV Temporary Overvoltage
PE Protective Conductor UMTS Universal Mobile Telecommunications System
PE Polyethylene U Utility
PEN Protective and Neural Conductor UPS Uninterrupted Power Supply
PEX Cross-linked polyethylene VDB Verband Deutscher Blitzschutzfirmen e.V. (Associa-
PLC Programmable Logic Controller tion of German Lightning Protection Companies)
PP Patch panel VDE Verband der Elektrotechnik, Elektronik und
PSU Power Supply Unit Informationstechnik e.V. (German Association for
Electrical, Electronic and Information Technologies)
PV Photovoltaic
RBS Radio Base Station VDEW Verband der Elektrizitätswirtschaft e.V.
RCD Residual Current Protective Device (German Association of the Electricity Industry)
RE Release Element VDN Verband der Netzbetreiber e.V. beim VDEW
(Association of German Network Operators at
RET Remote Electrical Tilt the VDEW)
RRH Remote Radio Head VDS Unternehmen des Gesamtverbandes der Deutschen
RRU Remote Radio Unit Versicherungswirtschaft e.V. (GDV) mit den Berei-
SCI Short Circuit Interruption chen Brandschutz, Security und Bildungszentrum
SDB Sub-Distribution Board & Verlag (company of the German Insurance
Association which ensures safety in the fields
SDS Smoke Detection System of fire protection, security and training centre &
SEB Service Entrance Box publishing house)
SELV Safety Extra-Low Voltage VS Ventilation Switch
SEMP Switching Electromagnetic Pulse VS/C Voltage Supply / Choke
SPD Surge Protective Device ZDC Zinc Die Casting
SPM Surge Protection Measure ZVDH Zentralverband des deutschen Dachdeckerhand-
SS Security Services werks (German Central Association of Roofers)

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