NSA3000 relay protection and automation devices for 10–220 kV and above (lines, busbars, transformers, 35 kV bays)
NSA3000 is a series of relay protection and automation devices for 10–220 kV grids and above. It includes busbar, transformer and line protection, measurement and control devices, stability control equipment and auxiliary devices. The products have passed type tests to the latest State Grid and China Southern Power Grid standards.
- Lines ≥220 kV
- NSA-3631: longitudinal phase and zero-sequence differential protection, distance protection
- Lines 110 kV
- NSA-3643: differential protection tripping time <25 ms, first distance zone <30 ms
- Busbars ≤220 kV
- NSA-3175: restrained differential protection, time <20 ms, breaker failure protection
- Transformers ≤220 kV
- NSA-3178: dual main and backup protection, 5-side differential protection, <30 ms
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
The hardware platform is built on a T3Pro/A40I processor with a quad-core heterogeneous AMP system. Functions that the ARM processor does not perform, and some of the special algorithms, are implemented on an FPGA. The internal high-speed bus on M-LVDS differential signals runs in multi-master mode without data loss and serves up to 8 modules. One enclosure and one backplane suit both digital and conventional devices, and functions are assembled from standard modules, which simplifies production and maintenance. The panel is solid, the enclosure is fully closed, and the power and low-current circuits are separated.
NSA-3631 provides main and backup protection of lines of 220 kV and above, and NSA-3643 protects lines of 110 kV and above. The fast main protection consists of phase-segregated differential protection and zero-sequence differential protection with time-domain capacitive current compensation. The backup protection includes three-zone distance protection against phase-to-phase and single-phase faults and stepped overcurrent protection. The differential protection trips the line in less than 25 ms at four times the setting, channel delay excluded, the first distance zone in less than 30 ms, and the fault-component element operates in 3–10 ms in the near zone. NSA-3643 complies with Q/GDW10766-2015, works with electronic and conventional transformers and supports GOOSE.
The NSA-3175 busbar protection for schemes of 220 kV and below, including double busbar with sectionalising and single sectionalised busbar, is based on the differential principle with instantaneous-value restraint and repeated validation of samples. The total operating time is less than 20 ms, and a breaker failure protection is included. The NSA-3178 transformer protection for two- and three-winding transformers of 220 kV and below supports dual sets of main and backup protection and five-side differential protection with an operating time of less than 30 ms. NSA-3100-GCN combines protection, measurement and control of bays of 35 kV and below.
The device has a 320 × 240 dot matrix display, and the interface switches between Chinese and English. The memory stores the 128 latest events and 64 fault waveform records, and the built-in recorder is compatible with the COMTRADE format.
Technical specifications
| Lines ≥220 kV | NSA-3631: longitudinal phase and zero-sequence differential protection, distance protection |
|---|---|
| Lines 110 kV | NSA-3643: differential protection tripping time <25 ms, first distance zone <30 ms |
| Busbars ≤220 kV | NSA-3175: restrained differential protection, time <20 ms, breaker failure protection |
| Transformers ≤220 kV | NSA-3178: dual main and backup protection, 5-side differential protection, <30 ms |
| Bays ≤35 kV | NSA-3100-GCN: protection, measurement and control |
| Platform | T3Pro/A40I processor, 4 cores (AMP), FPGA, internal M-LVDS bus |
| Standards | Q/GDW10766-2015, type tests to State Grid and Southern Grid standards; GOOSE/SV, ECT/EVT |
Request a price and lead time
NSA3000 relay protection and automation devices for 10–220 kV and above (lines, busbars, transformers, 35 kV bays). We reply within one business day.
Or email sales@usk.ua or call 044 339-50-20.
Customs codes
| UKTZED (Ukraine) | 8537 10 98 00 |
|---|---|
| HS, 6 digits | 8537 10 |
| CN (EU) | 8537 10 98 |
| HTSUS (USA) | 8537 10 91 70 |
| China customs tariff | 8537 10 90 90 |
Codes are for reference: the final code is determined at declaration for the specific model.
Questions and answers
What operating time does the NSA3000 line protection have?
The differential protection trips the line in less than 25 ms, and the first distance zone in less than 30 ms. The fault-component element operates in 3–10 ms in the near zone.
Do NSA3000 devices support digital substations?
Yes, NSA-3643 works with electronic and conventional transformers and supports GOOSE. One enclosure and one board are used for digital and conventional versions.
What protections are available for transformers and busbars?
NSA-3178 protects two- and three-winding transformers of 220 kV and below, with an operating time of less than 30 ms. NSA-3175 protects busbars of 220 kV and below, operates in less than 20 ms and includes breaker failure protection.
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