Patent ID: 7884597

Claim:
An apparatus for testing a protective, measuring, or metering device as a constituent part of a voltage installation, namely, a utility protective relay, a generator protective device, a current meter or other protective, measuring, or metering electrical devices in a voltage installation, characterized by a combined terminal and pole block ( 1 ) comprising several terminal and pole segments ( 2 ) disposed behind each other, each terminal and pole segment ( 2 ) comprising on its upper side a pole opening ( 5 ) for receiving a pole blade ( 7 ) of a plug ( 8 ), each terminal and pole segment ( 2 ) having a cable clamping apparatus ( 27 ; 28 ; 30 ; 31 ; 32 ) including a counter block ( 31 ) having a long side and a short side on either side thereof and including a pin ( 27 ) that is adjustable parallel to its longitudinal axis and that cooperates with said counter block ( 31 ); said cable clamping apparatus ( 27 ; 28 ; 30 ; 31 ; 32 ) being accessible through an opening ( 22 a ) disposed in the side wall of the terminal and pole segment ( 2 ) and able to be adjusted to accept and secure a cable inserted laterally, in the direction of the counter block's ( 31 ) longest side; said apparatus being constructed and arranged so that it is able to withstand tensile forces from cabling attached to said cable clamping apparatuses ( 27 ; 28 ; 30 ; 31 ; 32 ) without degradation of series terminal and pole block functions, therefore allowing it to be connected to tensile cabling of the voltage installation on the one side and connected to the protective, measuring or metering device on the other side, and thereby to serve both terminal block cable-pull relief functions and pole block device testing functions safely and accurately, and consequently reducing wiring and cost requirements and associated electrical-failures in the voltage installations.