Phase sequence tester

voltagephasepower

Overview
A 6-phase secondary-injection relay protection tester supplies six fully independent current channels and up to six simultaneous voltage outputs. This independence is essential for testing busbar differential protection, three-winding transformer protection and end-to-end relay verification between remote terminals, avoiding staged tests or mid-job reconfiguration that introduce errors and extend commissioning time.

Test modules / Relay types (table)
Relay protection type | Test item | Proposed test module | Remarks
Signal relay | Corresponding test items | DC Test | AC and DC test. If the intermediate relay requires hybrid AC/DC input, use the 'AC and DC Test' module. For very low rated signal currents, use the tester's voltage loop output.
Time relay | Various timing tests | See timing modules | See modules
Intermediate relay | Various function tests | See modules | See modules
Coincidence relay | Function tests | See modules | See modules
Other DC voltage/current relays | Corresponding tests | See modules | See modules
Current relay | Corresponding test items | AC Test | Sequence component relays: use special sequence module in 'AC Test'. Inverse-time relays: use 'It characteristics' module.
Over/under-voltage relay | Various tests | See modules | See modules
Sequence component relay | Various tests | See modules | See modules
Differential relay | DC magnetic characteristic | Differential relay, differential harmonic | AC/DC Test, Harmonic Test. Refer to Appendix 5 for correct test wiring.

Additional Notes
Product page includes demonstration video and multiple images showing the 6-phase test set, channel layout and typical connections used in substation commissioning.

Characteristics / technical specifications

• AC current output (per phase, six-phase mode): 0–30 A; output accuracy: ~0.1 (specified grade).
• AC six-phase parallel current output: 0–180 A (combined).
• Allowed continuous current per phase for prolonged operation: 10 A (reference value).
• Maximum output power (single-phase current): 450 VA.
• Maximum output power in six-phase parallel: 1000 VA; permitted duration at maximum parallel output: 10 s.
• AC current frequency range (fundamental): 0–1200 Hz.
• Harmonic generation capability: up to 24th harmonic.
• AC voltage output: phase 0–120 V (output precision ~0.1); line 0–240 V. Maximum load voltage examples shown: 20 V under specified load conditions.
• DC voltage output (phase amplitude): ±160 V (output precision ~0.2); line amplitude ±320 V.
• DC current output: per phase ±10 A (parallel values indicated in specs).
• Output power of phase/line voltage: e.g. 80 VA / 100 VA (AC) and 70 VA / 140 VA (DC) in respective modes.
• Inputs/outputs: 10 input channels; 8 DC output channels (examples in spec: DC 220 V / 0.2 A; AC 220 V / 0.5 A for auxiliary outputs).
• Free contact spec: 1–20 mA, 24 V (control contact example).
• Potential contact levels: logic '0' ≈ 0–+6 V; logic '1' ≈ +11 V–+250 V.
• Time measurement range: 0.1 ms–9999 s; measurement accuracy: 0.1 ms.
• Dimensions and weight: 420 × 360 × 210 mm; weight approximately 19 kg.