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CHINT/CHINT Terminal Appliances —NXU-III. Surge Protective Device
Basic parameters and technical performance indicators (Table 1)
| Technical parameters item | Parameter value | | Trial category | dishes | | Open Circuit Voltage Voc (kV) | 10 | | Short Circuit Current Isc (kA) | 5 | | Maximum continuous operating voltage Uc (V~) | 255、275、 320、385 | | Voltage Protection Level Up (kV) | 1.5 | | Number of poles | 1P+N、 2P | | Connecting wire (mm2) | <16 | | Tightening torque(N.m) | 1.5、 2.0 | | Ingress protection | IP20 | | Dimensions | See Figure 2 and Figure 3 | | Back-up protection circuit breaker | NB1-63 C10 |
Design types and protection mode combinations for different models of surge protective devices (see Table 2)
| Open Circuit Voltage(1.2/50us) (kV) | Maximum continuous operating voltage Uc (V~) | The design type is combined with the number of poles | | 10 | 320 | Composite type 2P | | 385 | | 10 | 255 | Composite 1P+N | | 275 |
SPECIAL FEATURES
The surge protector has a deterioration indication, as shown in sequence 3 in the figure, and after the product deteriorates, its indicator pops up on the surface of sequence 4 protection module to warn. At this point, the sequence 4 protection module should be replaced immediately without disconnecting the wiring or rewiring.
Sequence 1 is a surge protector maximum continuous operating voltage indication device, which can also prevent the insertion of the wrong specification module when replacing the module. The index value of its cardioid sharp angle is the maximum continuous operating voltage of the product.
Selection of the maximum continuous operating voltage Uc of the surge protective device
L-PE/N-PE protection mode: phase-to-ground and neutral-to-ground protection.
L-N/N-PE protection mode: phase to neutral and neutral to ground protection.
This article introduces the Chint/CHINT terminal electrical appliance - NXU-III. surge protector products interested, also contact our customer service, we look forward to your call, hope our technology and service can bring you a better experience.
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