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SGR-51 Reclosing Relay short-circuit from capacitor C2 allowing it to charge through RIO and potentiometer R37 to the firing voltage of unijunction transistor Q3. The time required

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Page 1: SGR-51 Reclosing Relay short-circuit from capacitor C2 allowing it to charge through RIO and potentiometer R37 to the firing voltage of unijunction transistor Q3. The time required
Page 2: SGR-51 Reclosing Relay short-circuit from capacitor C2 allowing it to charge through RIO and potentiometer R37 to the firing voltage of unijunction transistor Q3. The time required

41-668.1E Type SGR-51 Reclosing Relay

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Page 3: SGR-51 Reclosing Relay short-circuit from capacitor C2 allowing it to charge through RIO and potentiometer R37 to the firing voltage of unijunction transistor Q3. The time required

Type SGR-51 Reclosing Relay 41-668.1E

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Page 4: SGR-51 Reclosing Relay short-circuit from capacitor C2 allowing it to charge through RIO and potentiometer R37 to the firing voltage of unijunction transistor Q3. The time required

41-668.1E Type SGR-51 Reclosing Relay

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Page 5: SGR-51 Reclosing Relay short-circuit from capacitor C2 allowing it to charge through RIO and potentiometer R37 to the firing voltage of unijunction transistor Q3. The time required

Type SGR-51 Reclosing Relay 41-668.1E

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Page 6: SGR-51 Reclosing Relay short-circuit from capacitor C2 allowing it to charge through RIO and potentiometer R37 to the firing voltage of unijunction transistor Q3. The time required

41-668.1E Type SGR-51 Reclosing Relay

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Page 7: SGR-51 Reclosing Relay short-circuit from capacitor C2 allowing it to charge through RIO and potentiometer R37 to the firing voltage of unijunction transistor Q3. The time required

Type SGR-51 Reclosing Relay 41-668.1E

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Fig. 3. Internal Schematic of Type SGR-51 Relay*

Sub 3201C442

Page 8: SGR-51 Reclosing Relay short-circuit from capacitor C2 allowing it to charge through RIO and potentiometer R37 to the firing voltage of unijunction transistor Q3. The time required

41-668.1E Type SGR-51 Reclosing Relay

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Page 9: SGR-51 Reclosing Relay short-circuit from capacitor C2 allowing it to charge through RIO and potentiometer R37 to the firing voltage of unijunction transistor Q3. The time required

Type SGR-51 Reclosing Relay 41-668.1E

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Page 10: SGR-51 Reclosing Relay short-circuit from capacitor C2 allowing it to charge through RIO and potentiometer R37 to the firing voltage of unijunction transistor Q3. The time required

41-668.1E Type SGR-51 Reclosing Relay

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Page 11: SGR-51 Reclosing Relay short-circuit from capacitor C2 allowing it to charge through RIO and potentiometer R37 to the firing voltage of unijunction transistor Q3. The time required

Type SGR-51 Reclosing Relay 41-668.1E

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THIS PAGE RESERVED FOR NOTES

Page 12: SGR-51 Reclosing Relay short-circuit from capacitor C2 allowing it to charge through RIO and potentiometer R37 to the firing voltage of unijunction transistor Q3. The time required

ABB Inc.4300 Coral Ridge DriveCoral Springs, Florida 33065Telephone: +1 954-752-6700Fax: +1 954-345-5329www.abb.com/substation automation

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