Industrial and medium-voltage substations. Monitoring, protection and instrumentation for transformers with or without on-load tap changer (LTC).
| Part | Part numbers | Brand | |
|---|---|---|---|
 | VariSTAR station-class arrester | USAA010008A1045A11 (10 kV) · USAA060048A2845A11 (60 kV) | Eaton Cooper |
 | VariSTAR riser pole arrester | URS27120A1C1C1A (27 kV) | Eaton Cooper |
| Part | Part numbers | Brand | |
|---|---|---|---|
 | 1250B tap position monitor | 1250B-4-120 (4-20 mA) · 1250B-0-120 (0-1 mA) · Modbus: 1250B-4-M-120 | INCON |
 | LTC position monitor | 1250-LTC-0-I-M-120 · 1511-LTC-4-120 + synchro transmitter 1292KS | INCON |
 | Accessories for 1250 monitors | 1280 (surge module) · 1932 (line conditioner) · 1945 (power supply) | INCON |
 | TR42 temperature relay | TR42ADW · TR42CMW + probes PT1002M-1B / PT1005M-1B | Thermtronic |
 | Temperature controller and protection | TH104BUS V5 | Thermtronic |
 | DN50 Buchholz relay | BR050A246100 · BR050A346100 | Comem |
 | 10 psi internal fault detector | IFD-ORCA-10PSI-aA | IFD |
| Part | Part numbers | Brand | |
|---|---|---|---|
 | Magnetic level gauge | 406-441110 (with contacts) · 407-E12100 (without contacts) | VIAT |
 | Bimetallic thermometer with contacts | 123-11110 (0 to 120 °C) | VIAT |
 | Flanged drain valve with sampler | 186-2G11 (2" NPT) · sampler: 178 | VIAT |
 | Pressure-vacuum gauge and relief valve | 131 · 132 · indicating: 302-020-01IT | VIAT |
| Part | Part numbers | Brand | |
|---|---|---|---|
 | Natural ester dielectric fluid | VG100 line | Prolec GE |
 | Crepe paper insulating tubes | Tm series, 4.76 to 50.8 mm diameters | Fabricación propia |
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Power transformer photograph: Novoklimov (CC0), via Wikimedia Commons. Product images: Eaton.
