3-phase current transformer 100/5 1.5VA TP-100-5 F&F
- 3-phase current transformer 100/5 1.5VA TP-100-5 F&F
3-phase current transformer 100/5 1,5VA TP-100-5 F&F
Product description
Three-phase. current transformer 100/5. power 1,5 VA.
The 3-phase current transformer (3-in-1) is used for indirect measurement of three-phase currents. Its design allows it to be mounted directly on the outputs of power disconnectors (ABB Isomax series, Merlin Gerlin NS series and analogous) saving installation time and space in the switchgear.
Operation
The wire with the measured current passes through the main hole of the transformer(P1/P2), which is equivalent to one winding of the primary winding. The terminals of the secondary winding S1 and S2 are connected to the terminals of the measuring circuit of the control or measuring device.
The ratio of the intensities of the currents in the two windings is a constant quantity and is called the current ratio: IPn/ISn=N, where IPn - rated primary current; ISn - rated secondary current; N - value of transmission ratio. From the value of the current flowing through the secondary winding, the value of the current flowing through the primary winding can be determined: ISm*N=IPm, where ISm - measured primary current; IPm - measured secondary current.
Note!
Recommended to connect the secondary system with a wire with a diameter of not less than 2.5 mm².
Recommended grounding of the S2 terminal.
Prohibit disconnection of the secondary circuit during operation of the transformer (possibility of high voltage resulting in paralysis of persons or damage to the device).
Technical data:
| Type | three-phase |
| Construction | with closed core |
| Transmission lp/ls | 100/5 |
| Class | 1 |
| Power [VA] | 1.5 VA |
| Frequency | 50÷60 Hz |
| Maximum operating voltage | 720 V AC |
| Standard no | IEC 60044-1 |
| Secondary nominal current Is | 5 A |
| Insulation breakdown voltage | 3 kV/1 min. |
| P1/P2 hole dimensions | 15 mm x 21 mm |
| Weight | 0.452 kg |
| Safety factor | FS ? 5 |
| Connection S1/S2 | screw terminals 4 mm² |
| Dimensions WxHxD [mm] | 76.5 mm x 74 mm x 80 mm |
| Thermal short-circuit current (lth) | 60 x In |
| Dynamic short-circuit current (Idyn) | 2.55 x lth |
| Tightening torque | 0.5 Nm |
| Working temperature | -5÷40°C |
| Mounting position | vertical/horizontal |
| Mounting | dIN rail / board / cable |
| Degree of protection | IP20 |