Gossen Metrawatt M620A Phase Sequence Indicator (100 V ~ 690 V AC)

Application: Simultaneous testing of phase sequence, line frequency, and phase voltage

Measurement Modes: Standard 3-pole testing or convenient 2-pole measurement (scanning)

Voltage Range: 100 V to 690 V AC (indicated via 3 LEDs: 120/208V, 230/400V, 400/690V)

Frequency Range: 15 Hz to 410 Hz (indicated via 6 LEDs: 50, 60, 100, 200, 300, 400 Hz)

Phase Sequence Display: 6 optically rotating LEDs (Green = Clockwise / Red = Counterclockwise)

Error Detection: Visual indication of missing phases and asymmetries

Input Impedance: L1–L2 / L1–L3: approx. 500 kΩ; L2–L3: approx. 1 MΩ

Electrical Safety: CAT IV 600 V (Protection Class II)

Test Voltage: 5.55 kV

Protection Rating: IP40 (per DIN EN 60529)

Operating Temperature: –10°C to +50°C

Power Supply: 4 x 1.5 V AA batteries (approx. 100 hours service life)

Dimensions (W × H × D): 84 × 195 × 35 mm

Weight: approx. 0.3 kg (including batteries)

Datasheet

Delivery

1 phase sequence indicator

3 plug-on measurement cables with contact-protected plugs 600 V CAT IV 10 A

3 test probes for attachment to contact-protected plugs 1000 V CAT IV 1 A / 1000 V CAT II 32 A

1 alligator clip for attachment to contact-protected plugs 600 V CAT IV 19 A

4 batteries

1 operating instructions

1 carrying case