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CTG210 – CORE BALANCE TRANSFORMER 210 MM
Carlo Gavazzi CTG210 core balance transformer with a 210 mm internal diameter and 1000/1 ratio designed for earth leakage current detection applications.
£266.91
Why Choose the Carlo Gavazzi CTG210 Core Balance Transformer?
The Carlo Gavazzi CTG210 is a high-sensitivity core balance transformer designed for reliable earth leakage current detection in industrial electrical systems. As part of the Carlo Gavazzi CTG series, it detects differences in current flow through conductors passing through the transformer core and provides a secondary signal for use with compatible residual current monitoring relays.
The CTG210 features a large 210 mm internal diameter, making it suitable for installations requiring increased clearance for larger cables or multiple conductors. It is designed for panel mounting within electrical distribution boards, industrial switchgear and control systems where dependable earth leakage monitoring is required.
With a 1000/1 current transformer ratio, a 400 A nominal current rating and support for systems up to 720 V AC, the CTG210 provides reliable residual current detection for applications including motors, pumps and electrical equipment installed in industrial environments.
Key Advantages
- High-sensitivity core balance transformer for earth leakage current detection.
- 210 mm internal diameter suitable for large conductor arrangements.
- 1000/1 transformer ratio for residual current monitoring applications.
- Compatible with Carlo Gavazzi DEA71 and DEB71 earth leakage monitoring relays.
- Suitable for single-phase and three-phase electrical systems.
- Robust panel mounting construction for industrial protection applications.
Key Features
- Carlo Gavazzi CTG series core balance transformer.
- 210 mm internal aperture.
- 1000/1 current transformer ratio.
- 400 A nominal current rating.
- 50–60 Hz operating frequency.
- 720 V AC maximum system voltage.
- 3 kV AC rated insulation level.
- Designed for industrial earth leakage monitoring and electrical safety systems.
Reliable Earth Leakage Detection for Industrial Systems
Core balance transformers such as the Carlo Gavazzi CTG210 detect residual current by measuring the vectorial sum of current flowing through monitored conductors. When an imbalance occurs due to leakage current, the transformer generates a secondary signal that can be processed by a residual current monitoring relay to provide an alarm or protective disconnection.
The CTG series provides an effective solution for improving electrical safety in industrial installations, helping protect motors, pumps and equipment where insulation faults or leakage currents may create hazardous conditions.
Typical Applications
- Earth leakage monitoring systems.
- Industrial motor protection applications.
- Pump and machinery protection systems.
- Electrical distribution panels.
- Industrial equipment protection.
- Automation and power monitoring installations.
Technical Specifications
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| Mounting Type | Panel / base | |
|---|---|---|
| Device Type | Solid-core CT | |
| IP Rating | IP20 | |
| Manufacturer | Carlo Gavazzi | |
| Series | CTG | |
| Model | CTG210 | |
| Product type | Core balance transformer | |
| Internal diameter | 210 mm | |
| Transformer ratio | 1000/1 | |
| Nominal current | 400 A | |
| Overload current | 2400 A | |
| Short-term thermal current | 50 × In | |
| Dynamic current | 2.5 × Ith | |
| Frequency range | 50–60 Hz | |
| Maximum system voltage | 720 V AC | |
| Rated insulation level | 3 kV AC | |
| Protection rating | IP20 | |
| Dimensions (W × H × D) | 290 × 304 × 33 mm | |
| Weight | Approx. 1860 g | |
| Mounting | Panel mounting with fixing flange | |
| Secondary connection | Screw terminals 2 × 2.5 mm² | |
| Operating temperature | -5 to +50 °C | |
| Standards | IEC 61869-2 |
Frequently Asked Questions
What is the Carlo Gavazzi CTG210 used for?
The CTG210 is a core balance transformer used to detect earth leakage currents by monitoring current imbalance in electrical conductors.
What is the internal diameter of the CTG210?
The Carlo Gavazzi CTG210 has a 210 mm internal diameter for routing larger monitored conductors through the transformer.
What is the transformer ratio of the CTG210?
The CTG210 has a 1000/1 transformer ratio for residual current monitoring applications.
Which monitoring relays are compatible with the CTG210?
The CTG210 is designed for use with compatible Carlo Gavazzi earth leakage monitoring relays including the DEA71 and DEB71 series.
Can the CTG210 be used on three-phase systems?
Yes, the CTG210 can be used on both single-phase and three-phase mains systems.
Trusted by Industrial Safety Engineers Worldwide
Carlo Gavazzi CTG core balance transformers are widely used by electrical engineers and automation professionals to improve system safety through reliable earth leakage detection and residual current monitoring.
