EARTH FAULT PROTECTION RELAY
| Products Feature | |
| Microprocessor based numerical relay | Definite time for low-set & high-set |
| Current measurement based on fundamental frequency | Non-volatile fault value recording |
| Low-set earth-fault | Programmable relay outputs |
| High-set earth-fault | Five selectable IDMT charecteristic curves |
| Local display of measured and set values | Complies with IEC 60255-26 standard |
| SPECIFICATIONS | NX 232A-240VAC |
| RATINGS | |
| Current Rating (In) | 5A |
| Frequency | 50 or 60 Hz |
| Burden | < 0.3 VA at I |
| Thermal Withstand | 4 x | Continuous |
| SETTING RANGES | |
| Low-set (I>) | : 0.1 A to 5.0 A, step 0.05 A / 2% to 100%, step 1% |
| Low-set time set muttiplier (kt>) | : 0.05 to 1.0, step 0.01 |
| Low-set definite time (t | : 0.05 to 99 sec , step 0.01 (0.05 to 1.0) / 0.1 (1.1 to 99) |
| High-set (I>>) | : 0.1 A to 50 A or disable , step 0.1 A / 2% to 1000%, step 2% |
| High set delay time (t>>) | : 0.05 sec to 2.5 sec , step 0.01 |
| ACCURACY | |
| Protection Thresholds | +5% |
| Time Delay | 5% with a minimum of 50 ms |
| AUXILIARY SUPPLY | |
| Supply Voltage | 198 – 265 VAC |
| VA Rating | 3 VA typical |
| CONTACT SPECIFICATION | |
| Contact Arrangement | Change-Over |
| Contact Rating | 6A, 250 VAC (Cos p = 1) for Tripping Contact 5A, 250 VAC (Cos p = 1) for Signaling Contact |
| Contact Material | Silver Alloy |
| Operating Time | 15 ms max |
| Expected Electrical Life | 100,000 operations at rated current |
| Expected Mechanical Life | 5 x 10operations |
| Approval | UL / CSA/VDE / TUV / SEMKO |
| INDICATORS and DIMENSION | |
| Auxiliary Supply | LED Indicator |
| Pick-Up | LED Indicator |
| Trip | 7-Segment Display and LED Indicator |
| Dimension | 96 x 96 mm. |