ACTIVE CURRENT TRANSFORMER SERIES WKO-2C-B
Dual-core compensation current transformer for railway technology 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 Advantages 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 Technical data 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 Accuracy and dynamic data 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 Insulation data 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 Dimensions in MM 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 Datasheet All data and configurations can be found in our product datasheet. Download Datasheet Certifications
Active Current Transformer Series WKO-2C
Double core technology closed-loop current transformers Description REO has developed a new generation of closed-loop (C/L) current transducers which guarantees increased current measurement accuracy better than 0.3% in the whole frequency range: DC to 150 kHz. The new current transducer type WKO-2C is a completely new development utilizing REO’s double-core technology magnetic design. The unit uses the latest Hall effect elements with an extended frequency response of up to 150 kHz and an accurate phase response. Completely redesigned electronics ensure that the new C/L current transducer has better drift compensation and an extended temperature range from -40°C to 85°C. Modular mounting plates providing universal mounting options All REO current transformers in the WKO-2C series work according to the proven compensation principle and are suitable for measuring direct and alternating currents. According to: EN 50178:1997, UL 94-V0 EN50121, EN55011 IEC61869-1, IEC61869-8, IEC61010-1 According to: EN 50178:1997, UL 94-V0 Advantages high current measurement accuracy of 0.3% Modular mounting plates providing 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 Typical Applications Power electronics: AC-DC motor control, inverter technology, drive control Railway technology: drive control Renewable energy: control and monitoring of wind turbines Technical data 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 NominalcurrentIPN [A] Measurement rangeIP[A] Feed-inUC [V] Measurement accuracyXG@Ipn[-20…70°C]von IPN [%] RatioKN Secondary RMSNominal currentISN [mA] Secondary windingResistorRs@85°C [Ω] No-load current[mA] WKO-2C-300 300 0…±2000 ±11.4…25.2 >±0,3 2000 150 13 26+IS WKO-2C-500 500 0…±1000 ±11.4…25.2 >±0,3 5000 100 76 26+IS WKO-2C-1000 1000 0…±2700 ±14.25…25.2 >±0,3 5000 200 42 26+IS WKO-2C-2000 2000 0…±4000 ±14.25…25.2 >±0,3 5000 400 26 26+IS Accuracy and dynamic data Type Linearity error e [%] Offset error@25°C IO [mA] Offset Drift -25°C…+70°C IOT [mA] Response time tRA [μs] Response time10%-90%ta [μs] dl/dt ta [A/μs] Bandwidth -1 dB [kHz] WKO-2C-300 < ±0.1 ±0.5 <25 0,2 0,4 400 150 WKO-2C-500 < ±0.1 ±0.5 <25 0,2 0,4 400 150 WKO-2C-1000 < ±0.1 ±0.5 <25 0,2 0,4 400 150 WKO-2C-2000 < ±0.1 ±0.5 <25 0,2 0,4 1000 150 Insulation data Type Creepage distance dCp [mm] Clearance dCi [mm] Tracking resistance [CTI] AC insulation test 50/60Hz 1min Ud [kV] Pulse voltage test 1.2/50μs Ui [kV] Mass [kg] WKO-2C-300 14 13 600 6 12,5 0,340 WKO-2C-500 14 13 600 6 12,5 0,260 WKO-2C-1000 20 18 600 6 12,5 0,700 WKO-2C-2000 35 30 600 6 12,5 1,600 Mechanical Data 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-300 57 70 38 57 70 30,2 10,4/30,4 4,3 4,3 WKO-2C-500 57 70 38 57 70 30,2 10,4/30,4 4,3 4,3 WKO-2C-1000 78 94 42 78 94 38,5 13,5/40,5 5,3 5,3 WKO-2C-2000 102 135 52 102 135 57,5 20,5/60,5 6,5 6,5 Datasheet All data and configurations can be found in our product datasheet. Download Datasheet Certifications
Active Current Transformer Series WKO
Closed-loop current transformers Description Closed-loop current transformers The WKO current sensors work according to the proven compensation principle and are suitable for measuring direct, alternating and mixed currents. The primary current flow generates a magnetic flux, which is compensated by an internal secondary coil.The current evaluation is realized with an electronic circuit and a Hall sensor. The secondary compensation current is an exact reflection of the primary current to be measured. Unique Selling Point Measurement of direct, alternating and mixed currents Very high precision and short response time Broad frequency spectrum and low-temperature drift Very good linearity and overcurrent resistance No additional losses in the measuring circuit (DC to 150 kHz) Current output for lengthy transmission lines High-quality UL-listed insulating materials (e.g., UL94VO) Advantages (mechanical) Robust housing designs (for horizontal/vertical mounting) Variable connections, e.g. clamps, plugs, flat-cable plugs or cables versatile housing range with different Feed-through openings Typical Applications Industry, Renewable Energies, Railway Technology, Energy, Automation and Building Technology ELECTRICAL DATA Type WKO 25 WKO 50 WKO 100 WKO 300 WKO 500 WKO 1000 Primary RMS nominal current IPN [A] 25 50 100 300 500 1000 Measuring range IP [A] 0…±35 0…±70 0…±150 0…±500 0…±1000 0…±1500 Supply UC [V] ±12 …15 ±12 …15 ±12 …15 ±12 …15 ±12 …24 ±12 …24 Measuring accuracy XG@Ipn [-20…70°C] from IPN [%] > ±0,9 > ±1 > ±1 > ±1 > ±1 > ±1 Translation KN 1000 1000 1000 2000 5000 5000 Secondary RMS Nominal current ISN [mA] 25 50 100 150 100 200 Secondary winding Resistive sand RS@70°C [Ω] 16 43 24 30 72 48 Idle current [mA] 36+IS 11+IS 36+IS 36+IS 36+IS 24+IS Accuracy and dynamic data Type WKO 25 WKO 50 WKO 100 WKO 300 WKO 500 WKO 1000 Linearity error e [%] < ±0.1 < ±0.1 < ±0.1 < ±0.1 < ±0.1 < ±0.1 Offset error@25°CIO [mA] > 0,3 > 0,3 > 0,4 > 0,2 > 0,2 > 0,3 Offset Drift-25°C…+70°CIOT [mA] > 0,5 > 0,5 > 1 > 0,5 > 0,5 > 0,5 Response time tra[μs] > 0,5 > 0,5 > 0,5 > 0,5 > 0,5 > 0,5 Response time 10%-90% ta [μs] > 1 > 1 > 1 > 1 > 1 > 1 dl/dt ta [A/μs] > 50 > 50 > 100 > 100 > 100 > 100 Bandwidth -1 dB [kHz] DC…150 DC…200 DC…100 DC…100 DC…100 DC…100 Insulation data Type WKO 25 WKO 50 WKO 100 WKO 300 WKO 500 WKO 1000 Creepage distance dCp [mm] 4 8 10 10 10 15 Air section dCi[mm] 3 7 9 9 9 12 Leakage current resistance [CTI] 600 600 600 600 600 600 AC insulation test 50/60Hz 1min Ud [kV] 3,8 3,8 3,8 3,8 6 6 Pulse voltage test 1,2/50μs Ui[kV] 6 6 6 6 12,5 14,5 Mass [kg] 0,08 0,022 0,125 0,125 0,240 0,450 Dimensions in MM Type Pin connection/ 4-pin h [mm] b [mm] b1/b2 [mm] t [mm] DL [mm] p/s [mm] a/a1 [mm] c1/c2 [mm] f [mm] e [mm] l [mm] WKO 25 A; -U; +U 39 39 – 26 10 – 2 x 10/6,5 25/6,5 M3 6,0 x 4,0 9 WKO 50 A; -U; +U Please find in the drawing WKO 100 A; -U; +U 55 – 55/68 26 20,2 45/45 – 13,0/– 4,3 6,0×4,0 12 WKO 300 A; -U; +U 55 – 55/68 26 20,2 45/45 – 13,0/– 4,3 6,0×4,0 12 WKO 500 A; -U; +U 70 – 70/89 33 31,0 57/57 – 15,2/– 4,3 6,0×4,3 12 WKO 1000 A; -U; +U 95 – 94/110 44 40,0 78/78 – 18,0/– 5,3 8,0×5,3 12 Datasheet All data and configurations can be found in our product datasheet. Download Datasheet Certifications