Product Description
G7BI (Part‑no.1KHW000911R0001) is the binary I/O contact interface board for ABB/Hitachi Energy NSD570 teleprotection unit. It plugs into internal slot of NSD570 chassis. This board provides galvanically isolated digital inputs and relay dry‑contact outputs. It interfaces external hard‑wired trip / permissive / block contact signals from protective relays, and outputs teleprotection command relay contacts. It bridges legacy hard‑wired protection equipment and NSD570 main unit. Built‑in channel supervision and diagnostics. Works cooperatively with G1LA / G1LB / G3LC communication boards. OEM end‑of‑life, supplied as legacy utility maintenance spare part。
Technical Parameters
| Item | Specification |
|---|---|
| Model | G7BI, Part‑no.1KHW000911R0001 |
| Manufacturer | ABB / Hitachi Energy |
| Product Type | NSD570 Binary I/O Contact Interface Board |
| Compatible Unit | NSD570 Teleprotection System |
| Mounting | Plug‑in slot inside NSD570 chassis |
| Signal Type | Isolated digital inputs, relay dry‑contact outputs |
| Function | Collect external protection contact signals; output teleprotection relay commands |
| Isolation | Galvanic isolation |
| Diagnostics | Channel self‑supervision, fault reporting to main unit |
| Compatible Boards | G1LA, G1LB, G3LC communication interface boards |
| Operating Temperature | ‑25℃ ~ +55℃ |
| Storage Temperature | ‑40℃ ~ +70℃ |
| Humidity | 5‑95%RH non‑condensing |
| Ingress Protection | IP20 (cabinet‑internal use) |
| Status | OEM EOL discontinued, legacy power‑utility spare part |
Product Application
- Legacy‑relay hard‑contact interface: Interface trip, permissive and block dry‑contacts from conventional substation protection relays into NSD570.
- Hard‑wired protection‑command output: Output received remote‑end teleprotection commands via relay contacts to local protection devices.
- Mixed‑mode teleprotection deployment: Hybrid solution combining hard‑wired contacts and IEC 61850‑GOOSE for mixed‑legacy / smart‑substation retrofits.
- Faulty board replacement: Direct swap‑out for defective I/O board inside NSD570 to restore contact‑based signal handling.
- Utility spare‑parts inventory: Standby spare for HV‑line teleprotection systems to minimize protection‑outage duration.
Related NSD570 Series Boards
- G1LA Analog power‑line‑carrier interface board
- G1LB E1/T1 digital line interface board
- G3LC Ethernet communication interface board
- P7LC Local display & operator panel
- NSD570‑CPU NSD570 main control unit
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