SUWI-120 series stands as a versatile testing instrument meticulously crafted to evaluate the performance of power and control apparatus within substations. It encompasses an array of essential tests, including the precise assessment of Relay Timing, the determination of a Transformers Turns Ratio, the scrutiny of Circuit Breaker Contact Resistance and Timing, as well as the examination of MCBs, among other critical functions. This all-encompassing substation testing device has earned the name SUWI, from our belief in its skills as a Substation Wizard.

RELAY TIMING MEASUREMENT

The SUWI instrument can automatically test over-current, over-voltage, directional overcurrent relays and frequency control relays. SUWI has an adjustable output current up to 110A AC / 120A DC and an adjustable output voltage to 150V AC / 220V DC. It has four universal input modules.

TURNS RATIO MEASUREMENT

Employing elements of performance tests specified in the ANSI/IEEE C57.12.90 standard, the instrument performs transformer ratio measurements to a precision of 0.08 % across a ratio range of 0.8 to 10,000. SUWI also measures phase angle and polarity, and it can generate 1V, 4V, 10V, 40V and 100V AC test voltages to facilitate the measurement of turns ratio for current, voltage and power transformers.

CONTACT RESISTANCE / LOW RESISTANCE MEASUREMENT

SUWI has an adjustable output DC current up to 120 Amps which facilitates the measurement of contact resistance of a circuit breaker, a shunt or disconnector. SUWI-120 can measure resistance up to 5 Ohm, with a resolution of 0.01uOhm.

CIRCUIT BREAKER TIMING

Contact Timing Tests are performed to determine a breakers contact performance against its manufactured specifications. The timing for a breakers operation such as OPEN, CLOSE, OPEN-CLOSE, CLOSE-OPEN and OPEN-CLOSE-OPEN are measured for all three-phases simultaneously. SUWI can perform 3-phase circuit breaker timing test cycles as described above along with coil current measurements using internal and external trigger inputs.

TECHNICAL SPECIFICATIONS

Measurement ParametersRelay Timing Tests (over current relays, over voltage relays, directional over current relays, frequency control relays);

Turns Ratio Measurement, Phase Angle, Polarity, Ratio Error (%);

Contact Resistance/Low Resistance Tests (Circuit breaker contact resistance and shunt resistance)

Circuit breaker timing test (3-phase circuit breaker timing tests; open, close, open-close, close-open, open-close-open timings, coil current measurement, internal and external trigger operations)

PROTECTION RELAY TIMING MEASUREMENT FEATURES

Current OutputsUp To 110 A AC (magnitude and frequency adjustable)

Up to 120 A DC

Voltage Outputs150 V AC (magnitude and frequency adjustable)

220 V DC

Universal Input Modules4 input module; Binary wet/dry

Up to 300 V AC/DC voltage measurement

TURNS RATIO MEASUREMENT FEATURES

Ratio Measurement ModesCT Mode

PT Mode (Single-Phase and Three-Phase)

Test VoltagesCT Mode: 1 V and 4 V ;

PT Mode: 1, 4, 10, 40 & 100 V

Ratio Range0.8 -10,000

CONTACT RESISTANCE/LOW RESISTANCE MEASUREMENT FEATURES

Measurement ModesStatic Resistance Measurement

Auto Test ModeYes

Test CurrentUp to 120 A DC

Measurement RangeUp to 5 Ohm

CIRCUIT BREAKER TIMING MEASUREMENT FEATURES

Measurement ParametersContact Timing (O, C, O-C, C-O & O-C-O); Coil Current Measurement, Internal and External Trigger Operations

Timing Windows1s, 10s, 20s

Timing Accuracy0.05% rdg ± 0.1 ms

Contact detectionYes

Trigger input voltage 24 300 V DC or ACpeak

Breaker Initiate Capacity20 A, 300 V DC or ACpeak

Initiate current reading range 0 20A DC, 5 kHz

GENERAL FEATURES

Power Supply100-240 V, 47/63 Hz,

Internal MemoryYes

CommunicationUSB 2.0/1.1 Standard-B, Ethernet

PC SoftwareDMP Software

Display7-inch IPS 1024*600 pixel touch panel display

Dimensions (429 x 328 x 236) mm

Weight10.70 kg

TemperatureWorking : -10 °C to +60 °C; Storage: -30 °C to +70 °C

Humidity95% RH Non-condensing

Protection ClassIP67 (case lid closed)

Standard accessories

Included in the Package5x5m Input Cables (Red), 5x 5m Input Cables (Black), 2x 3m Contact Cable (White), 2x 3m Contact Cable (Blue), 1x 2.5m Current Cable (Red), 1x 2.5m Current Cable (Black), Power Cable, Ground Cable, USB Cable, Ethernet Cable, USB flash drive, Instruction Manual (Soft Copy), DMP Software, Cable Bag

Recommended options

Optional5m Measurement Cable Set for TURA-01 , TURA01 Cable Set Adapter, CIBREL3 Cable Set Adapter, 6m Contact Cable Set of contact 1 , 2 &3

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