7
ACB Interlock
For an ATYSCxxCIPACB and ACB transfer switch to be compliant to 60947.6.1, & AS/NZS 3010 a mechanical
interlock shall be installed between the 2 ACBs.
The mechanical interlock on a body of an ACB is a factory fit item and should be specified at the time of ordering
the ABCs.
The mechanical interlock on the carriage of an ACB can be fitted on site by qualified personnel.
NHP/Terasaki have a interlock manual for the fitting of the carriage part of the mechanical interlock, the full
manual can be found here..
Type
“C”
Interlock
1. Check all loose items have been provided.
•
2 x carriage interlock mechanism and 6 x spacers
•
2 x jig 1 and 1 x jig 2
•
2 x interlock cable (customer to specify 2.5M or 4.0M length)
•
2 x brass adjustable end (with 6mm grub screw, adjustment nuts and washers and 1 x allen key)
•
4 x M6 20mm mounting studs comes with 4 x M6 nuts and 8 x spring washers
•
2 x M6 12mm (flat and spring washer attached) fixing bolts and 6 x M6 12mm pan head screws
2.
Type ‘C’ interlocks use two interlock cables. Cable ends must be connected to specific letter
labelled ports
on the carriage interlock mechanism. Table 2.0 below shows the interlock connections between the
breakers.
A rule of thumb
is to always run the ‘open’ (the end that takes the loose brass adjustable end)
cable end to ports ‘A’ and the fixed ends to ports ‘D’. This helps during the final adjustment process.
Another recommendation is to label the cable ends with the breaker and port destination. For example ’ACB
1, port A’’ and ’ACB 2, port D” .
Interlock Type
Cable Qty
ACB Port Connection
Comment
‘ACB 1’ Port
‘ACB 2’ Port
2pcs
A
D
Cable brass end to
‘A’, fixed end to ‘D’
D
A
Cable brass end to
‘A’, fixed end to ‘D’
Summary of Contents for ATYSC CIPACB Series
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