BK Bar Current Transformer Type Measuring
BK Bar Current Transformer is a built-in bar type measuring current transformer. It provides accurate current transformation for measurement in low-voltage electrical systems. it delivers stable and reliable measurement results.
Product Overview
The BK bar operates in low-voltage electrical systems. It features a 25 × 3 mm built-in primary busbar integrated into the transformer body. This design allows the primary current to pass safely through the transformer. As a result, the BK supports reliable operation in compact installations.
Intended Use
The BK bar works with many measuring devices. These include analog ammeters, digital ammeters, energy meters, and power analyzers. Therefore, it connects the secondary circuit to the measuring device for safe and accurate current measurement.
Electrical Characteristics
The BK bar transforms the primary current within its rated operating range. It is available with 1 A or 5 A secondary outputs. It also comes in different accuracy classes to meet various metering needs. In addition, the low VA burden allows connection to standard measuring devices without problems. As a result, the transformer delivers accurate and stable readings.
Installation Options
The BK supports plate mounting. Installers can fix it securely onto a mounting plate using screws. The built-in 25 × 3 mm busbar forms the primary conductor, which simplifies installation and ensures safe and reliable operation inside electrical equipment.
it meets the requirements of IEC 61869-1, IEC 61869-2, and EN 61869-2 standards. It also complies with IEC 60044-1. In addition, the product conforms to VDE 0414-1, DIN 57414, BS 3938, and BS 7626 standards. The insulating materials pass the TS EN 60695-2-11 Glow-Wire Test. The enclosure meets IEC/EN 62262 impact resistance requirements. As a result, the product complies with CE and TSE regulations. ISO 9001:2015 ensures stable quality and controlled production. ISO 14001:2015 supports environmentally responsible manufacturing. Together, these standards help deliver safe insulation, correct clearances, and strong mechanical protection.
Construction and Safety
The BK bar uses a strong insulation system for safe operation in industrial environments. A sealed terminal cover improves touch protection. High-quality terminals provide secure electrical connections. As a result, the transformer allows safe installation and reliable long-term operation.
To learn more about current transformer standards, visit:
Code: BK105205
| PRIMARY | CLASS1.0 | CLASS 0.5 | CLASS 0.5S | |||
| CURRENT (A) | CODE | CODE | CODE | CODE | CODE | CODE |
| BURDEN 5VA | BURDEN 10VA | BURDEN 5VA | BURDEN 10VA | BURDEN 5VA | BURDEN 10VA | |
| 5/5 A | BK55105 | BK55107 | BK55205 | BK55207 | BK55305 | BK55307 |
| 10/5 A | BK105105 | BK105107 | BK105205 | BK105207 | BK105305 | BK105307 |
| 15/5 A | BK155105 | BK155107 | BK155205 | BK155207 | BK155305 | BK155307 |
| 20/5 A | BK205105 | BK205107 | BK205205 | BK205207 | BK205305 | BK205307 |
| 25/5 A | BK255105 | BK255107 | BK255205 | BK255207 | BK255305 | BK255307 |
| 30/5 A | BK305105 | BK305107 | BK305205 | BK305207 | BK305305 | BK305307 |
| 40/5 A | BK405105 | BK405107 | BK405205 | BK405207 | BK405305 | BK405307 |
| 50/5 A | BK505105 | BK505107 | BK505205 | BK505207 | BK505305 | BK505307 |
| 60/5 A | BK605105 | BK605107 | BK605205 | BK605207 | BK605305 | BK605307 |
| 75/5 A | BK755105 | BK755107 | BK755205 | BK755207 | BK755305 | BK755307 |
| 80/5 A | BK805105 | BK805107 | BK805205 | BK805207 | BK805305 | BK805307 |
| 100/5 A | BK1005105 | BK1005107 | BK1005205 | BK1005207 | BK1005305 | BK1005307 |
| 125/5 A | BK1255105 | BK1255107 | BK1255205 | BK1255207 | BK1255305 | BK1255307 |
| 150/5 A | BK1505105 | BK1505107 | BK1505205 | BK1505207 | BK1505305 | BK1505307 |
| 200/5 A | BK2005105 | BK2005107 | BK2005205 | BK2005207 | BK2005305 | BK2005307 |
Current Transformers Coding Map
| Parameter | Value |
| Standards | IEC 60044-1, IEC 61869-2, VDE 0414-1, DIN57414, BS3938, BS7626, EN 61869-2 |
| CT Ratio | From 5A to 200A |
| Rated Power | Up to 15VA |
| Accuracy class | Class 0.5S, Class 0.5, Class 1.0 |
| Terminal | Integral terminal cover, high cross section brass terminal for extra safety |
| Case | Non-flammable self-extinguishing ABS/PC |
| Mounting | Plate Mounted, KK0001 |
| Primary conductor | 25 x 3 built-in busbar |
| Ambient temperature (operation) | -25 C ~ +85 C |
| Number of input | 1 |
| Thermal rated short-time current | Ith = 60 In |
| Thermal rated continuous current | Id = 1 * In |
| Rated frequency | 50 Hz … 60 Hz |
| Surge current limitation factor | FS 5 |
| Test voltage | 3 kV for 1 min |
| Max system voltage | 0.72 kV |
