TEL TAVRIDA ELECTRIC VCB15 LD, User Manual

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An electrical interlock can be provided by connecting the ISM actuator coil in series with the contacts of a positi-
on switch of the relevant device (disconnector or draw-out truck, etc.) as shown in the Figure 56.
AC — actuator coil;
PS — position switch with
current not less than
10 A;
R — resistor 22 kOhm±5%,
average power 0.15 W,
peak power 8 W
The position switch must be positively driven in both directions and must fully operate before the interlocked
ISM starts to move to its alternative position. Resistor ‚R‘ is used to prevent the CM alarm “Actuator Coil
Isolated“ while position switch PS is open.
CM
ISM
Figure 55
Interlocking lever assembly
design for three phase ISM
4.1.6 HD ISM interlocks
Interlocking mechanism
The HD ISM is equipped with an interlocking shaft that can be rotated clockwise to the “unlatched“ position or
counter-clockwise to the “open and locked“ position. In the “unlatched“ position the HD ISM can perform “clo-
se” and “open” operations.
In the “open and locked” position the ISM the interlocking shaft prevents the actuator mechanically from closing.
In addition the actuator coils are disconnected from the CM.
If the HD ISM is closed, rotation of the interlocking shaft from “unlatched” to “open and locked” position leads
to manual tripping. The CM indicates alarm “Manual Trip”.
Actuator coil
PS
R
AC
Figure 56
Electrical interlock diagram
c) Fix Det_Holder_22 on the CBdet_Shaft_1 with
StandDet_Bolt_DIN933(M6_20_Fe88-Zn)