Description
The WKO-2C-B current transformer with dual-core technology and Hall effect has an extended frequency response up to 150 kHz and a precise phase response.
The WKO-2C-B guarantees improved measuring accuracy of 0.3% in the entire frequency range: DC up to 150 kHz.
The completely revised electronics ensure that the C/L current transformer has better drift compensation and an extended temperature range of -40°C to 85°C is achieved.
Modular design
The current transformer has a modular design and enables a variety of mounting options. The cost-effective basic model consists of a housing with screw connections, lead-through for cables and holes for mounting. Optionally, the converter can be supplied with a mounting kit for busbars, Molex connectors and with feet for horizontal or vertical mounting.
According to:
- EN 50178:1997
- UL 94-V0
- EN 50178
- EN 50155:2007
- IEC 61373:2010
Benefits
- meets the safety standards required in railway technology: EN 50178, EN 50155:2007 and IEC 61373:2010
- Shock and vibration testing according to IEC 61373:2010
- high current measurement accuracy of 0.3%
- modular design offers universal mounting options
- lower sensitivity to external magnetic fields
- bidirectional and isolated current measurement
- Current output
- REO dual-core technology
- Manufactured with UL-listed materials
- Accuracy: better than 0.3%
- Ambient temperature: -40°C … +85°C
- Storage temperature: -40°C … +90°C
- Primary nominal current: 300 – 2000 A
- Measuring range: 0…4000 A
- Frequency range: DC – 150 kHz
| Type | Primary RMS nominal current IPN [A] |
Measuring range IP [A] |
Supply UC [V] |
Measuring accuracy XG@Ipn [-20…70°C] of IPN [%] |
Translation [KN] |
Secondary RMS nominal current ISN [mA] |
Secondary winding resistance RS@85°C[Ω] |
Open circuit current [mA] |
| WKO-2C-B-300 | 300 | 0…±2000 | ±11.4…25.2 | < ± 0.3 | 2000 | 150 | 13 | 26+IS |
| WKO-2C-B-500 | 500 | 0…±1000 | ±11.4…25.2 | < ± 0.3 | 5000 | 100 | 76 | 26+IS |
| WKO-2C-B-1000 | 1000 | 0…±2700 | ±14.25…25.2 | < ± 0.3 | 5000 | 200 | 42 | 26+IS |
| WKO-2C-B-2000 | 2000 | 0…±4000 | ±14.25…25.2 | < ± 0.3 | 5000 | 400 | 26 | 26+IS |
| Type | Linearity error e [%] |
Offset error@25°C Io [mA] |
Offset drift -25°C…+70°C IOT [mA] |
Response time tra[μs] |
Response time 10%-90% ta [μs] |
dl/dt [A/μs] |
Bandwidth -1 dB [kHz] |
| WKO-2C-B-300 | < ±0.1 | ±0.5 | < 25 | 0,2 | 0,4 | 400 | 150 |
| WKO-2C-B-500 | < ±0.1 | ±0.5 | < 25 | 0,2 | 0,4 | 400 | 150 |
| WKO-2C-B-1000 | < ±0.1 | ±0.5 | < 25 | 0,2 | 0,4 | 400 | 150 |
| WKO-2C-B-2000 | < ±0.1 | ±0.5 | < 25 | 0,2 | 0,4 | 1000 | 150 |
| Type | Creepage distance dCp [mm] |
Clearance dCi [mm] |
Tracking resistance [CTI] |
AC isolation test 50/60 Hz 1min Ud [kV] |
Impulse voltage test 1.2/50μs Ui [kV] |
Mass [kg] |
| WKO-2C-B-300 | 14 | 13 | 600 | 6 | 12,5 | 0,340 |
| WKO-2C-B-500 | 14 | 13 | 600 | 6 | 12,5 | 0,260 |
| WKO-2C-B-1000 | 20 | 18 | 600 | 6 | 12,5 | 0,700 |
| WKO-2C-B-2000 | 35 | 30 | 600 | 6 | 12,5 | 1,600 |
| Type | b1 [mm] |
b2 [mm] |
t [mm] |
s [mm] | h [mm] |
D Ø [mm] |
D1/D2 [mm] |
Ø f [mm] |
Ø e [mm] |
| WKO-2C-B-300 | 57 | 70 | 38 | 57 | 70 | 30,2 | 10,4/30,4 | 4,3 | 4,3 |
| WKO-2C-B-500 | 57 | 70 | 38 | 57 | 70 | 30,2 | 10,4/30,4 | 4,3 | 4,3 |
| WKO-2C-B-1000 | 78 | 94 | 42 | 78 | 94 | 38,5 | 13,5/40,5 | 5,3 | 5,3 |
| WKO-2C-B-2000 | 102 | 135 | 52 | 102 | 135 | 57,5 | 20,5/60,5 | 6,5 | 6,5 |
All data and configurations can be found in our product data sheet.
