The Ritherdon CT chamber is an insulated enclosure made to mount the electricity meter and to house the current transformers and is a tamper-proof and sealable unit. Designed to be safe, but also quick and easy to install.
The individual phase covers which protect the electrician allow work to be carried out in the CT chamber on one phase without having to isolate the complete unit.
Benefits of the Ritherdon CT Chamber:
- Lugging tool not required
- Switch off and safely work on a single phase
- CTs quickly and securely clips onto the terminal rail
- Pre-Wiring is included for connection to CTs and Meter
- Safe and easy to operate testing unit
- Rating up to 309 KVA / 430 Amps
The requirement for CT Metering:
Metering using current transformers or CTs is required when the energy supply is typically greater than 100 A (~70 kVA at 415 V). This is known as CT Metering or using current transformers to measure a current that is too high to measure directly or where the voltage of the circuit is too high. The current transformer is used to provide an isolated lower current in its secondary which is proportional to the current in the primary circuit. The induced secondary current is then suitable for measuring using an electricity meter.
The Ritherdon CT Chamber comes populated with:
- A DIN rail for mounting the current transformers.
- Three separate single phases and a neutral phase.
- A prewired WAGO terminal test block.
We supply CT Chambers that include 200 Amp set of three metering class CTs as well as 400A and 600A all including individual test certificates. The CTs supplied are moulded case current transformers and come with a custom bracket so they can be DIN rail mounted.
Current Transformers or CTs are also supplied separately.
The CT Chamber’s plastic enclosure is supplied separately to the backplate so that weight is not an issue. The backplate is easily secured inside the enclosure after it has been mounted onto the cut-out and fixed to the wall.
Contact us for more information on the supply of the Ritherdon CT Chamber and the supply of separate CTs.
We understand that the requirement for CT Chambers often arises when it is necessary to energise the site and we deliver to a lead time of 48 hours when in stock with a 5 days at the latest.
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