- Toroidal design.
- Supplied with 24" insulated secondary leads, terminated with crimped ring connectors.
- Suitable for use with bare (uninsulated) primary conductor in circuits up to 600 V (4 KV hipot); or at higher voltages when a suitably insulated conductor is used.
- All units have 5 A secondary for use with standard AC ammeters with 5 A movements.
- Two hole mounting bracket on all models.
- UL #E227616 volume #1 file #X0DW2.
To obtain current measurement:
- Pass the wire carrying the current to be measured through the window of the CT transformer (acting as a primary winding).
- Connect the CT secondary to an ammeter with a 5 amp movement.
For higher accuracy or higher VA burden rating:
- Choose a CT with a primary which is a multiple of the required primary rating and which has the accuracy or VA burden you require.
- Loop the wire carrying the current to be measured through the window a number of times equal to the multiple. This "winding" will reduce the ratio back to required primary rating.
- Example "A": To obtain an accuracy of 1.2% at 10 VA burden with a ration of 100:5, use a CT400A and loop 4 primary turns through the window.
- Example "B": To obtain a 25:5 ratio, use a CT75A with 3 primary turns to yield 2% accuracy or a CT50A with 2 primary turns to yield 3.2% accuracy.
KGA Enclosures Ltd is a fully authorised distributor of the CT Series from Hammond Manufacturing Transformers. We also stock the entire Hammond Manufacturing Transformers range at great competitive pricing and with full customisation options on all applicable products.
Please remember to always use approved distributors like KGA Enclosures Ltd as some companies sell knock-offs and copies, so using approved suppliers assures you receive a genuine product.
To purchase a product, request a quote/lead time and for all other general enquires, please contact us. We aim to respond promptly to all enquires. Payment options include Bank Transfer, PayPal and Credit/Debit cards. Unfortunately, we do not accept cash and cheques.
