Current transformer TOL-10-I-12 (TOL10I12, TOL 10 I 12, TOL10-I-12, TOL10 I 12, TOL10I-12, TOL10I 12, TOL-10-1-12, TOL-10-I-XII)
Current transformer TOL-10-I-12 is designed for installation in complete switchgear (KRU) and serves to signal measurement information instrumentation and (or) protection and control, to isolate the circuits of secondary compounds of high-voltage electrical installations AC voltage class up to 10kV 50Hz or 60Hz.
The unit switches on the primary side, the secondary windings of the output contacts at the top.
Technical characteristics of the instrument current transformers TOL-10-I-12:
The number of secondary windings - 2;
Rated frequency AC - 50Hz or 60Hz;
Rated secondary current of the current transformer unit TOL-10-I-12 - 1A, 5A;
Rated primary current - 5A, 10A, 15A, 20A, 30A, 40A, 50A, 75A, 80A, 100A, 150A, 200A, 300A, 400A, 500A, 600A, 750A, 800A, 1000A, 1200A, 1500A, 2000A;
Accuracy class of the instrument current transformer TOL-10-I-12 - 0,5; 0,5 S, 0,2; 0,2 S;
Embodiment, the nominal primary current of the device and the safety factor are given in Table 1;
Table 1 embodiment, the rated current of the device and the safety factor of the current transformer TOL-10-I-12
General view of the device shown in Figure 1;
Figure 1: General view of the instrument current transformer TOL-10-I-12
Weight - 20 kg ± 1 kg;
The transformers are manufactured in climatic design "T2" and "U2" and are intended for indoor use in:
Height above the sea level - no more than 1000 m.
- Ambient temperature with the heat the air inside the switchgear - from -45 ° C to +50 ° C for the performance of "U2" and from -10 ° C to +55 ° C for the performance of "T2";
- Environment explosive, without dust, reactive gases and vapors in concentrations destroy metal and insulation;
- Working position - any;
Earthquake-proof devices when exposed zemletraseny intensity of 8 points on the MSK-64 at the facility level above ground level up to 70m;
Instrument current transformer TOL-10-I-12 is intended for delivery to the AU, with class security for 3H-001 NP-97 and 2 seismic category for NP-031-01;
In current transformers may be used to account for the secondary windings, Class 0,2 S and 0,5 S with the value of the secondary load below 25% of nominal;
The minimum weight for the device current transformer windings TOL-10-I-12 accuracy class 0,2 S and 0,5 S is 1B · A;
The certificate on the current transformers with secondary windings for accounting accuracy classes 0,2 S and 0,5 S indicates the measured current and the angular error at rated secondary burden 1B · A;
Can manufacture transformers with different transformation ratios of secondary windings;
The manufacturer guarantees that the quality of the instrument current transformer TOL-10-I-12 to the technical requirements specifications provided the customer terms and conditions of storage, transportation, installation, operation, and its specified operational documentation.