CBCT-120 - Uncategorized ENTES - Free user manual and instructions
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| Type | Core Balance Current Transformer (CBCT) |
| Model | CBCT-120 |
| Brand | ENTES |
| Application | Earth leakage detection for electrical installations |
| Rated Primary Current | 120 A |
| Frequency | 50/60 Hz |
| Output Signal | Secondary current proportional to earth leakage |
| Accuracy | Class 1 or better |
| Operating Temperature | -25°C to +55°C |
| Dimensions (approx.) | 130 mm x 80 mm x 60 mm |
| Weight (approx.) | 0.5 kg |
| Enclosure Rating | IP20 |
| Standards | IEC 62020, IEC 61557 |
| Installation | Snap-on mounting on DIN rail or panel |
| Maintenance | Regular visual inspection and functional test |
| Safety | Double insulation, CAT III |
| Spare Parts | Contact ENTES service center |
Frequently Asked Questions - CBCT-120 ENTES
What is the purpose of the ENTES CBCT-120?
The CBCT-120 is a core balance current transformer used to detect earth leakage currents in electrical installations, typically for protection relay triggering.
How do I install the CBCT-120?
Mount the CT on a DIN rail or panel. Pass all live conductors (L1, L2, L3, N) through the window. Secure wiring to the secondary terminals.
What is the maximum primary current rating?
The rated primary current is 120 A continuous. Do not exceed this value to avoid saturation or damage.
Can the CBCT-120 be used for three-phase systems?
Yes, it is designed for three-phase and single-phase systems. All phase and neutral conductors must pass through the CT window.
What output does the CBCT-120 provide?
It provides a secondary current that is proportional to the earth leakage current. Typical output is 1 A or 5 A at rated leakage.
How do I test the CBCT-120?
Use a primary injection test set to inject a known leakage current. Measure secondary output and compare with expected ratio.
What is the accuracy class of the CBCT-120?
The accuracy is typically Class 1 per IEC 62020, ensuring reliable earth leakage measurement.
Can the CBCT-120 be used outdoors?
No, it has an IP20 rating, suitable for indoor use only. For outdoor, install in a weatherproof enclosure.
What is the operating temperature range?
The device operates from -25°C to +55°C. Avoid exposure to extreme conditions.
Is the CBCT-120 compatible with any earth leakage relay?
It is compatible with most relays accepting a 1 A or 5 A secondary input. Check relay specifications for burden and ratio.
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USER MANUAL CBCT-120 ENTES
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Product information
Brand : ENTES
Model : CBCT-120
Category : Uncategorized