Siemens 7PG21 Solkor Rf User Manual

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7PG21 Solkor Rf
Feeder Protection
Reyrolle
Protection
Devices

Siemens 7PG21 Solkor Rf Specifications

General

Brand	Siemens
Model	7PG21 Solkor Rf
Category	Protection Device
Language	English

Summary

3 Operation

Figure 4 Through Fault, zero ohm pilots, Positive half cycle

Diagram illustrating through fault operation with zero ohm pilots.

Figure 5 Through Fault, zero ohm pilots, Negative half cycle

Diagram illustrating through fault operation with zero ohm pilots.

Figure 6 Through Fault, 1000 ohm pilots, Positive half cycle

Diagram illustrating through fault operation with 1000 ohm pilots.

Figure 7 Through Fault, 1000 ohm pilots, Positive half cycle

Diagram illustrating through fault operation with 1000 ohm pilots.

4 Performance

4.1 Solkor R/Rf Relay

Covers relay insulation, isolation transformer, and through fault stability.

4.2 Pilot Supervision Equipment

Details auxiliary supply, burdens, and contact ratings for pilot supervision.

4.3 Injection Intertripping

Specifies rating, burden, and connection requirements for injection intertripping.

12 Current Transformer Requirements

1 Differential Protection settings

1.1 Protection Sensitivity

Details fault settings as a percentage of rated current for different fault types.

2. Solkor R/Rf Relay

2.2 Test programme

Outlines the sequence of commissioning tests for the relay.

2.6 Pilot Tests

Covers pilot insulation, loop resistance, and connection checks.

2.7 Overall fault-setting tests

Verifies relay settings and secondary wiring integrity.

2.8 Circuit-breaker tripping tests

Confirms correct circuit breaker tripping response.

2.9 Stability Tests

Ensures stable operation under through fault conditions.

3. Pilot Supervision Equipment

3.3 Commissioning Tests

Outlines commissioning tests including connections, pilot tests, and relay checks.

4. Solkor Intertripping

4.3 Commissioning

Details tests for TEC relay, inverter, and final commissioning steps.