ETT series current sensors (high currents)
The ETT series current sensors are designed for measuring high direct, alternating, pulse currents or their combinations.
A special feature of the sensors is their large aperture (window size for the primary current busbar).
ETT 300 series sensors are collapsible, which greatly simplifies the installation of the sensor in electrical equipment.
Each sensor has four output signals:
– for the nominal current measurement range:
– output 1: current output – (Is1);
– output 2: voltage output – (Vs1);
– for the extended current measurement range:
– output 3: current output – (Is2);
– output 4: voltage output – (Vs2).
MAIN SPECIFICATIONS
| Characteristic | ETT 100 | ETT 200 | ETT 300 |
|---|---|---|---|
| Rated primary current (A) | ±4,000 ±6,000 ±10,000 |
±4,000 ±6,000 ±10,000 ±20,000 |
±4,000 ±6,000 ±10,000 ±20,000 |
| Extended range primary current (A) | ±20,000 ±30,000 |
±20,000 ±30,000 ±40,000 |
±20,000 ±30,000 ±40,000 ±60,000 ±80,000 |
| Rated value Is1, mA | ±20 | ||
| Rated value Is2, mA | ±20 | ||
| Rated value Vs1, V | ±10 | ||
| Rated value Vs2, V | ±10 | ||
| Basic error Ƴ (reduced) for Is1, Vs1, % (at +25°C, AC) | 1.0 | ||
| Basic error Ƴ (reduced) for Is1, Vs1, % (at +25°C, DC) | 2.0 | ||
| Error Ƴ (reduced) for Is2, Vs2, % (at +25°C, AC) | 3.0 | ||
| Error Ƴ (reduced) for Is2, Vs2, % (at +25°C, DC) | 5.0 | ||
| Bandwidth, kHz | 0…10 | ||
| Supply voltage, V | ±15…18 | +24 | |
| Overall dimensions, mm | 200x200x32 | 240x240x32 | 405x405x50 |
| Busbar aperture, min, mm | 125 | 165 | 305 |
| Weight, max, kg | 2.0 | 3.0 | 5.0 |
| Collapsible | no | no | yes |
| Ambient temperature, °C | -40…+85 | ||
Technical description: