Protection Relays
AssemblyDedicated protection relays monitoring overcurrent, underfrequency, overvoltage, and reactive power per generator. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
Protection Relays parts and their functions
5 top-level parts · 8 parts in total · full bill of materials below
| # | Part | Qty | What it does |
|---|---|---|---|
| 1 | Relay | 4× | Electromagnetic or static overcurrent relays (50/51), adjustable 150–600 A settings |
| 2 | Underfrequency Relay | 1× | Underfrequency relay (81) detecting grid failure or excessive load |
| 3 | Overvoltage Relay | 1× | Overvoltage relay (59) tripping if excitation runaway occurs |
| 4 | Reverse-Power Relay | 1× | Reverse-power relay (32) detecting motoring mode and disconnecting generator |
| 5 | Synchronism Check Relay | 1× | Out-of-sync relay (25) preventing closure if generators are >10° phase offset |
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Bill of materials for Protection Relays
5 top-level lines · 5 rows shown · 8 parts total · indented to 3 levels| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | Relay | relay | 4× | 4 | · | part |
| 2 | Underfrequency Relay | generator-paralleling-underfreq-relay | 1× | 1 | · | part |
| 3 | Overvoltage Relay | generator-paralleling-overvoltage-relay | 1× | 1 | · | part |
| 4 | Reverse-Power Relay | generator-paralleling-reverse-power-relay | 1× | 1 | · | part |
| 5 | Synchronism Check Relay | generator-paralleling-sync-check-relay | 1× | 1 | · | part |
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Where the protection relays is used
1 product across 1 domain contain it, directly or inside a sub-assemblyUsed in 1 assembly
Sourcing: possible vendors
Browse the supplier directory → Prices, MOQ, and lead times are algorithmic estimates, not quotes, and not claims about these companies. Company mappings are curated by keyword; est. price band $0.50–$100. How estimates work| Vendor | HQ | Specialty | MOQ | Lead time |
|---|---|---|---|---|
|
🇨🇳Foxconn
foxconn.com ↗
|
Shenzhen, CN | Electronics contract mfg | 1,000 pcs | 6–10 wks |
| flex.com ↗ | Singapore | Electronics contract mfg | 1,000 pcs | 6–10 wks |
| dixoninfo.com ↗ | Noida, IN | Electronics contract mfg | 1,000 pcs | 6–10 wks |
| bydelectronic.com ↗ | Shenzhen, CN | Electronics contract mfg | 1,000 pcs | 6–10 wks |
| venture.com.sg ↗ | Singapore | Electronics contract mfg | 1,000 pcs | 6–10 wks |