ZMPT107 Voltage Transformer – 2mA Primary and Secondary, 1000 to 1000 Turns Ratio, PCB Mount

The ZMPT107 is a compact PCB-mount voltage transformer designed for isolated AC voltage measurement in energy meters, industrial instruments, and protection relays. It operates with a rated primary current of 2mA and a secondary current of 2mA, using a 1000 to 1000 turns ratio to reproduce the primary waveform at a proportional secondary current. Linearity is specified at 0.2% across the 20% to 120% rated range, and the phase angle error is 45 minutes or less at rated input with a 50 Ω sampling resistor. The linear measurement range extends from 0 to 1000 V (corresponding to 0 to 10mA with a 50 Ω burden), making this AC voltage sensor suitable for direct measurement of mains and distribution voltages when paired with an appropriate current-limiting resistor. Isolation voltage is 4000 V, and the operating temperature range is -40°C to +70°C. The blue plastic housing is impact-resistant and lightweight, and the PCB-mount package suits space-constrained designs. Because the output is a current signal, a burden resistor is required to convert it to a voltage for an ADC. Typical applications include electrical energy metering, AC voltage sensing, overload current detection, ground fault detection, and relay protection. This ZMPT107 voltage transformer is a low-cost, high-precision solution for isolated voltage measurement on a printed circuit board.

1. Electrical energy metering and AC voltage measurement in single-phase meters.
2. Isolated voltage sensing in industrial instruments and data acquisition systems.
3. Overload current detection and ground fault detection in protection circuits.
4. Relay protection and electrical testing equipment.
5. Household electrical equipment and appliance monitoring.
6. PCB-level voltage measurement where a compact isolation voltage transformer is required.

1. Model: ZMPT107.
2. Type: current-type voltage transformer, PCB mount.
3. Rated primary current: 2mA.
4. Rated secondary current: 2mA.
5. Permissible output current: 2.5mA.
6. Turns ratio: 1000 to 1000.
7. Phase angle error: 45 minutes or less (at 2mA input, 50 Ω sampling resistor).
8. Linearity: 0.2% or better (20% to 120% of rated).
9. Permissible error: -0.6% to 0% (at 2mA input, 50 Ω sampling resistor).
10. Linear range: 0 to 1000 V, 0 to 10mA (with 50 Ω sampling resistor).
11. Isolation voltage: 4000 V (per source page; some distributor datasheets state 3000 V or 4kV AC).
12. Operating temperature: -40°C to +70°C (per source page; some datasheets state -40°C to +85°C).
13. Housing material: blue plastic, impact-resistant.
14. Mounting: PCB through-hole.