HEYI Factory MSQ Type Current Transformer
MSQ series current transformers can display and record the operation of electrical equipment in AC circuits with a rated voltage below 720V and a frequency of 50-60Hz to protect the equipment from damage.
Introduce
HEYI brand of MSQ series current transformers can be used in test control to display and record the operation of electrical equipment in AC circuits with a rated voltage below 720V and a frequency of 50-60Hz to protect the equipment from damage. This product can also be used in mine matching transformer
Applications
Current measurement, monitoring and piotection for electrical wiring and equipment.
Current and power measurement for electric motors, lighting,air compressor, heating and ventilation system.
air-condition equipment and Current, power and energy monitoring device.
Relay protection device.
Features
The structure of the self-locking, safe, easy to install, portable.
Wide inner window, allowing clamping of big cables or bus-bars.
Wide range of sizes to accommodate all the existing installations.
Technical Parameter
| Electrical Parameter | Mechanical Parameter | ||
| Frequency | 50/60Hz | Case | PC/UL94-V0 |
| Rated Input | 1A-5000A | Bobbin | PBT |
| Measuring range | 5%In-120%In | Core | Silicon steel |
| Rated Output | 1A,5A | Construction | Screw |
| Ratio Voltage | 0.72KV (AC) | Operating Temp | －25℃～＋75℃ |
| Dielectric strength | 3.0KV/1mA/1min | Operating Humidity | ≤85% |
| Insulation Resistance | DC500V/100MΩ min | Output Connection | Terminal |
Specification
| Type | Current Ratio | Burden（VA) | Frequency(Hz) | |||
| class:0.2s | class:0.5s | class:0.5 |
class:1.0 | |||
| MSQ-B | 5/5A | 2.5 | 2.5 | 2.5 | 5 | 50/60 |
| 10/5A | 2.5 | 2.5 | 2.5 | 5 | 50/60 | |
| 15/5A | 2.5 | 2.5 | 2.5 | 5 | 50/60 | |
| 20/5A | 2.5 | 2.5 | 2.5 | 5 | 50/60 | |
| 25/5A | 2.5 | 2.5 | 2.5 | 5 | 50/60 | |
| 30/5A | 2.5 | 2.5 | 2.5 | 5 | 50/60 | |
| 40/5A | 2.5 | 2.5 | 2.5 | 5 | 50/60 | |
| 50/5A | 2.5 | 2.5 | 2.5 | 5 | 50/60 | |
| 75/5A | 2.5 | 2.5 | 2.5 | 5 | 50/60 | |
| Type | Current Ratio | Burden（VA) | Frequency(Hz) | |||
| class:0.2s | class:0.5s | class:0.5 |
class:1.0 | |||
| MSQ-30B | 5/5A | 2.5 | 2.5 | 5 | 7.5 | 50/60 |
| 10/5A | 2.5 | 2.5 | 5 | 7.5 | 50/60 | |
| 15/5A | 2.5 | 2.5 | 5 | 7.5 | 50/60 | |
| 20/5A | 2.5 | 2.5 | 5 | 7.5 | 50/60 | |
| 25/5A | 2.5 | 2.5 | 5 | 7.5 | 50/60 | |
| 30/5A | 2.5 | 2.5 | 5 | 7.5 | 50/60 | |
| 50/5A | 2.5 | 2.5 | 5 | 7.5 | 50/60 | |
| 60/5A | 2.5 | 2.5 | 5 | 7.5 | 50/60 | |
| 100/5A | 2.5 | 2.5 | 5 | 7.5 | 50/60 | |
| 150/5A | 2.5 | 2.5 | 5 | 7.5 | 50/60 | |
| 200/5A | 2.5 | 2.5 | 5 | 7.5 | 50/60 | |
| 250/5A | 2.5 | 2.5 | 5 | 7.5 | 50/60 | |
| 300/5A | 2.5 | 2.5 | 5 | 7.5 | 50/60 | |
| Type | Current Ratio | Burden（VA) | Frequency(Hz) | |||
| class:0.2s | class:0.5s | class:0.5 | class:1.0 | |||
| MSQ-20 | 30/5A | – | – | – | 1 | 50/60 |
| 40/5A | – | – | – | 1 | 50/60 | |
| 50/5A | – | – | – | 1 | 50/60 | |
| 60/5A | – | – | – | 1.5 | 50/60 | |
| 75/5A | – | – | – | 2.5 | 50/60 | |
| 100/5A | 2.5 | 2.5 | 2.5 | 2.5 | 50/60 | |
| Type | Current Ratio | Burden（VA) | Frequency(Hz) | |||
| class:0.2s | class:0.5s | class:0.5 | class:1.0 | |||
| MSQ-30S | 30/5A | – | – | – | 1 | 50/60 |
| 50/5A | – | – | – | 1 | 50/60 | |
| 75/5A | – | – | – | 1.5 | 50/60 | |
| 100/5A | 2.5 | 2.5 | 2.5 | 2.5 | 50/60 | |
| 150/5A | 2.5 | 2.5 | 2.5 | 2.5 | 50/60 | |
| 200/5A | 2.5 | 2.5 | 2.5 | 2.5 | 50/60 | |
| 250/5A | 2.5 | 2.5 | 2.5 | 2.5 | 50/60 | |
| 300/5A | 2.5 | 2.5 | 5 | 5 | 50/60 | |
| Type | Current Ratio | Burden（VA) | Frequency(Hz) | |||
| class:0.2s | class:0.5s | class:0.5 |
class:1.0 | |||
| MSQ-30 | 30/5A | – | – | – | 1 | 50/60 |
| 40/5A | – | – | – | 1 | 50/60 | |
| 50/5A | – | – | – | 1 | 50/60 | |
| 60/5A | – | – | – | 1.5 | 50/60 | |
| 75/5A | – | – | – | 1.5 | 50/60 | |
| 80/5A | – | – | – | 2.5 | 50/60 | |
| 100/5A | 2.5 | 2.5 | 2.5 | 5 | 50/60 | |
| 150/5A | 2.5 | 2.5 | 2.5 | 5 | 50/60 | |
| 200/5A | 2.5 | 2.5 | 5 | 5 | 50/60 | |
| 250/5A | 2.5 | 2.5 | 5 | 7.5 | 50/60 | |
| 300/5A | 7.5 | 7.5 | 10 | 10 | 50/60 | |
| Type | Current Ratio | Burden（VA) | Frequency(Hz) | |||
| class:0.2s | class:0.5s | class:0.5 | class:1.0 | |||
| MSQ-40 | 100/5A | 2.5 | 2.5 | 2.5 | 2.5 | 50/60 |
| 150/5A | 2.5 | 2.5 | 2.5 | 2.5 | 50/60 | |
| 200/5A | 2.5 | 2.5 | 2.5 | 2.5 | 50/60 | |
| 250/5A | 2.5 | 2.5 | 2.5 | 2.5 | 50/60 | |
| 300/5A | 2.5 | 2.5 | 5 | 5 | 50/60 | |
| 400/5A | 2.5 | 2.5 | 5 | 5 | 50/60 | |
| 500/5A | 2.5 | 2.5 | 5 | 5 | 50/60 | |
| Type | Current Ratio | Burden（VA) | Frequency(Hz) | |||
| class:0.2s | class:0.5s | class:0.5 | class:1.0 | |||
| MSQ-50 | 150/5A | – | – | – | 2.5 | 50/60 |
| 200/5A | 2.5 | 2.5 | 2.5 | 2.5 | 50/60 | |
| 250/5A | 2.5 | 2.5 | 2.5 | 5 | 50/60 | |
| 300/5A | 2.5 | 2.5 | 5 | 5 | 50/60 | |
| 400/5A | 2.5 | 2.5 | 5 | 5 | 50/60 | |
| 500/5A | 2.5 | 2.5 | 5 | 10 | 50/60 | |
| 600/5A | 2.5 | 2.5 | 5 | 10 | 50/60 | |
| 750/5A | 7.5 | 7.5 | 10 | 10 | 50/60 | |
| 800/5A | 7.5 | 7.5 | 10 | 10 | 50/60 | |
| 1000/5A | 7.5 | 7.5 | 10 | 10 | 50/60 | |
| 1200/5A | 7.5 | 7.5 | 20 | 20 | 50/60 | |
| Type | Current Ratio | Burden（VA) | Frequency(Hz) | |||
| class:0.2s | class:0.5s | class：0.5 | class:1.0 | |||
| MSQ-60 | 250/5A | 2.5 | 2.5 | 5 | 5 | 50/60 |
| 300/5A | 2.5 | 2.5 | 5 | 5 | 50/60 | |
| 400/5A | 2.5 | 2.5 | 5 | 10 | 50/60 | |
| 500/5A | 2.5 | 2.5 | 5 | 10 | 50/60 | |
| 600/5A | 2.5 | 2.5 | 5 | 10 | 50/60 | |
| 750/5A | 2.5 | 2.5 | 5 | 10 | 50/60 | |
| 800/5A | 5 | 5 | 7.5 | 10 | 50/60 | |
| 1000/5A | 5 | 7.5 | 10 | 15 | 50/60 | |
| 1200/5A | 5 | 7.5 | 10 | 15 | 50/60 | |
| 1500/5A | 10 | 10 | 15 | 15 | 50/60 | |
| 1600/5A | 10 | 10 | 15 | 15 | 50/60 | |
| Type | Current Ratio | Burden（VA) | Frequency(Hz) | |||
| class:0.2s | class:0.5s | class：0.5 | class:1.0 | |||
| MSQ-80 | 750/5A | 2.5 | 2.5 | 5 | 10 | 50/60 |
| 800/5A | 5 | 5 | 10 | 10 | 50/60 | |
| 1000/5A | 5 | 5 | 10 | 10 | 50/60 | |
| 1200/5A | 5 | 5 | 10 | 15 | 50/60 | |
| 1500/5A | 7.5 | 7.5 | 15 | 15 | 50/60 | |
| 1600/5A | 7.5 | 10 | 15 | 15 | 50/60 | |
| 2000/5A | 7.5 | 10 | 15 | 15 | 50/60 | |
| Type | Current Ratio | Burden（VA) | Rated Frequency(Hz) | |||
| class:0.2s | class:0.5s | class:0.5 | class:1.0 | |||
| MSQ-85 | 750/5A | 2.5 | 2.5 | 5 | 10 | 50/60 |
| 800/5A | 2.5 | 2.5 | 5 | 10 | 50/60 | |
| 1000/5A | 5 | 5 | 7.5 | 10 | 50/60 | |
| 1200/5A | 7.5 | 7.5 | 10 | 15 | 50/60 | |
| 1500/5A | 7.5 | 7.5 | 10 | 15 | 50/60 | |
| 1600/5A | 7.5 | 7.5 | 10 | 15 | 50/60 | |
| 2000/5A | 7.5 | 7.5 | 10 | 15 | 50/60 | |
| Type | Current Ratio | Burden（VA) | Rated Frequency(Hz) | |||
| class:0.2s | class:0.5s | class:0.5 | class:1.0 | |||
| MSQ-100 | 800/5A | 2.5 | 2.5 | 5 | 10 | 50/60 |
| 1000/5A | 5 | 5 | 10 | 15 | 50/60 | |
| 1200/5A | 5 | 5 | 10 | 15 | 50/60 | |
| 1250/5A | 7.5 | 7.5 | 10 | 15 | 50/60 | |
| 1500/5A | 7.5 | 7.5 | 10 | 15 | 50/60 | |
| 1600/5A | 7.5 | 7.5 | 10 | 15 | 50/60 | |
| 2000/5A | 7.5 | 7.5 | 10 | 15 | 50/60 | |
| 2500/5A | 7.5 | 7.5 | 10 | 15 | 50/60 | |
| 3000/5A | 7.5 | 7.5 | 10 | 15 | 50/60 | |
| Type | Current Ratio | Burden（VA) | Rated Frequency(Hz) | |||
| class:0.2s | class:0.5s | class:0.5 | class:1.0 | |||
| MSQ-120 | 1000/5A | 5 | 5 | 10 | 10 | 50/60 |
| 1200/5A | 5 | 10 | 20 | 20 | 50/60 | |
| 1500/5A | 10 | 10 | 20 | 20 | 50/60 | |
| 2000/5A | 15 | 15 | 20 | 20 | 50/60 | |
| 2500/5A | 15 | 15 | 40 | 40 | 50/60 | |
| 3000/5A | 15 | 15 | 40 | 40 | 50/60 | |
| 4000/5A | 15 | 15 | 40 | 40 | 50/60 | |
| Type | Current Ratio | Burden（VA) | Rated Frequency(Hz) | |||
| class:0.2s | class:0.5s | class:0.5 | class:1.0 | |||
| MSQ-125 | 1000/5A | 5 | 5 | 5 | 10 | 50/60 |
| 1200/5A | 5 | 5 | 7.5 | 10 | 50/60 | |
| 1500/5A | 10 | 10 | 10 | 15 | 50/60 | |
| 1600/5A | 10 | 10 | 10 | 15 | 50/60 | |
| 2000/5A | 15 | 15 | 15 | 20 | 50/60 | |
| 2500/5A | 15 | 15 | 15 | 20 | 50/60 | |
| 3000/5A | 15 | 15 | 15 | 20 | 50/60 | |
| 4000/5A | 15 | 15 | 15 | 20 | 50/60 | |
| 5000/5A | 15 | 15 | 20 | 20 | 50/60 | |
| 6000/5A | 15 | 15 | 20 | 20 | 50/60 | |
Please contact us for more models and specifications.
FAQ
1. What current ratios are available for the MSQ current transformer?
HEYI MSQ current transformers are available in a wide range of primary current ratios with 1A or 5A secondary output. Common options include 100/5A, 200/5A, 400/5A, 600/5A, 1000/5A, 2000/5A and higher current ratings. Custom ratios can also be discussed according to project requirements.
2. How do I choose the right MSQ current transformer size for my cable or busbar?
The correct MSQ model depends on the primary current, cable diameter or busbar dimensions, required accuracy class and rated burden. For busbar current transformer applications, please provide the busbar width and thickness so we can recommend a suitable window size.
3. What accuracy classes are available for MSQ current transformers?
HEYI MSQ current transformers can support accuracy classes such as Class 0.2S, 0.5S, 0.5 and 1.0 depending on the model, current ratio and burden. Class 0.2S and 0.5S are suitable for applications that require higher measurement accuracy, including energy metering and power monitoring.
4. What VA burden should I choose for an MSQ current transformer?
The required VA burden depends on the connected meter or measuring device, secondary cable length and wiring resistance. Common burdens include 2.5VA, 5VA, 10VA and 15VA. Please provide your ratio, accuracy class and required VA so we can confirm the suitable MSQ current transformer.
5. Can MSQ current transformers be used with energy meters and electrical panels?
Yes. MSQ current transformers are widely used as a current transformer for energy meter, electrical panel, switchboard and energy monitoring applications. They can be installed around cables or busbars to provide a reduced secondary current for meters, monitoring devices and other measuring equipment.
