Ritherdon manufacture two different variants of PDU, a rural version used on remote locations to provide power to post mounted equipment using Adaption Kits and a Gantry version that can be utilised with the Adaption Kits to provide power to varying Gantry mounted equipment.
Cable entry points for 3off 32mm stuffing glands, 9off 25mm stuffing glands and 18off 20mm stuffing glands all pre-punched and blanked off to ease on site installation and the fitting of any further equipment required.
All components are DIN rail mounted and secured in place using end stops and solid full height blanks.
The bottom row of the PDU (Panel 5) is used for all incoming and outgoing cables, it has fitted a separate removable panel and is fitted with WAGO Topjob terminal blocks to ease the installation of cables, space has been provided underneath the terminal blocks for helix coils.
Panel 4 is the connection point for the main incoming feed. A double pole 100A isolator is used on this row and is also a lockable device.
As per MCX8001 Type 1, 2 & 3 Surge protection is fitted to provide a reduced let through voltage that internal rack mounted equipment can withstand.
The Gantry variant PDU comes with a part populated Panel 2. A double pole 63A isolator is fitted for the fitting of up to 8 AMI’s.
As standard a double pole Type A RCD is fitted feeding a 20A fuse carrier to provide power to 1 MS4. 5 spare ways are reserved on the row for either Speed enforcement equipment or a 2nd message sign.
The final circuit on this row is for ADS-lighting which uses a Double pole 63A isolator with 4 blank ways for the fitting of the ADS- Lighting adaption kit. This variant comes with a rotary isolation switch that will isolate all gantry circuits.
The top row of the PDU (Panel 1) is for all final internal circuits provided, a Type A 63A RCD protected circuit for the pre-fitted heater and Maintenance socket and as well as a spare, if a Fan kit is required using Type C 6A MCBs.
Individually protected via 6A RCBOs with 8off IEC C13 kettle leads, 1off 13A socket bar and 1 spare which provide power to the Comms equipment of the cabinet, power to the RCBOs being fed through a double pole 63A lockable isolator.
Two Double pole isolators are installed on the top row separate to the aforementioned circuits, one to provide power for a post mounted Adaption Kit and the other for a 2nd local cabinet.
All PDU’s go through functional testing before they are delivered to either National Highways stores or direct to site.