With the SEW 855PRB, you benefit from dual functionality; effortlessly identify open phases and verify phase sequence with a quick glance, thanks to the intuitive lamp indicators. Handling complex electrical systems is made safer and more straightforward, with large size alligator clips specifically designed for easy attachment to switchboard terminals.

No matter the demand of your projects, the SEW 855PRB stands ready to assist, accommodating a wide range of three-phase power sources from 200V to 600V AC, and suited for both 50 and 60 Hz operations. This device guarantees accuracy and reliability across varied environmental conditions, operating optimally within 0°C ~ 40°C at up to 80% relative humidity, and safely stored within -10°C ~ 50°C at up to 90% Max. relative humidity.

Featuring a compact design measuring 134(L) × 85(W) × 45(D) mm and weighing approximately 530g, the SEW 855PRB is built for both portability and durability. Each unit comes equipped with 1.1m long test leads in red (R), white (S), and black (T), catering to professionals who demand precision and flexibility in their tools.

Safety is paramount, and the SEW 855PRB emphasises this with compliance to EN 61010-1 CAT IV 600V and EN 61326-1 standards, providing you with peace of mind in its operation and reliability.

Invest in the SEW 855PRB – CAT IV Contact Phase Rotation Tester to empower your electrical testing capabilities, making every phase check-up swift, precise, and safe. Perfect for electricians, engineers, and technicians seeking to enhance their toolkit with a professional-grade, dependable device. Add the SEW 855PRB to your cart today and experience efficiency redefined.

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Included with the SEW 4338mO is an extra large set of Kelvin Clamps, standard kelvin clips and 4 wire test lead set.

SEW 4338 mO Specifications

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It is supplied supplied in a compact and durable watertight case for extra protection.

The 110V AC or 230V AC mains powered version, the SEW 4136mO , is available on special request.

SEW 4137mO Milliohmmeter Specification

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Earth resistance can be measured directly from 0.01 ohms up to 1999 ohms. The reading is displayed on a large, easy-to-read digital display. The reading can be adjusted to 0Ω as a baseline control reading when shortcircuiting all of the test leads.

The SEW 1120 ER makes measurements by passing a constant current through the device being tested and measuring the voltage across it. The earth resistance is then calculated by Ohm’s Law.

The advanced circuitry of SEW 1120 ER permits the instrument to operate with minimal influence from earth voltage and earth resistance of the auxiliary spikes.

. The calibration of the instrument is performed with the included test leads. When using all three test leads in the three-terminal method, accuracy is assured for most common applications. Alternatively, two-terminal measurements, though generally less accurate than three-terminal measurements, are also possible by shorting the P and C terminals or by using the simplified measurement probe.

The test frequency of 820Hz avoids stray currents at power frequencies and their harmonics. Additionally, the 1120 ER utilizes a built-in filter to reject unwanted signals. The batteries are constantly being checked while in use. The rugged case is ideal for outdoor work. Earth electrode testing, which is an important part of electrical installation and maintenance procedures, is made easy with the 1120 ER. It can be used by electrical contractors or maintenance engineers to check the effectiveness of their earth electrode systems.

Specifications:

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High voltage electrical circuits are dangerous and lethal through lack of caution or poor safety practice. The following rules should reduce the danger: ˙Read the user manual carefully and completely before using the Multi-purpose digital high voltage phasing meter.

Fully understand the instructions before using this product. Take all the necessary precautions. Do not exceed the limits of this Multipurpose digital high voltage phasing meter. ˙

Always use fiber glass rods or authorized hot sticks for connection. ˙A high voltage test is carried out with the Multipurpose digital high voltage phasing meter attached to a hot stick, such as HS-175, HS-120, HS-120R. ˙Do not touch any exposed wiring, connections, or other “live” parts of an electrical circuit.

The SEW MDP-50K must only be used by a competent, suitably trained person who understands this test procedure fully. Personnel working with high voltage Should be trained regularly.

SEW MDP-50K FEATURES

●  AC 50kV and DC 50kV measurement with direct reading.
●  4000-count LCD.
●  Input impedance : 400 Mohm
●  Auto-ranging : AC : 4.000kV / 40.00kV / 50.0kV DC : 4.000kV / 40.00kV / 50.0kV
●  MDP-50K must be connected with an approved hot stick, such as HS-175, HS-120, HS-120R.
●  Check phases are “in-phase” or “out of phase”.
●  Polarity indication : Positive / Negative
●  Backlight function.
●  Auto power off.
●  Power source : 1.5V(AA) alkaline battery × 2.
●  Low battery indication(Multi-level).
● Protection class : IP66

SEW MDP-50K Accessories:

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● Microprocessor-controlled.
● Earth resistivity (ρ) test.
● Earth testing at 20Ω, 200Ω, 2kΩ.
● Earth voltage measurement : 0-300V AC.
● Automatic C spike check.
● Automatic P spike check.
● 2-Wire test, 3-Wire test, 4-Wire test.
● LCM display.
● Auto ranging.
● Auto power OFF.
● Data hold.
● 200 measurement results can be saved in the memory and recalled on the display.
● Interval between auxiliary earth spikes is 1.0~50.0m.
● Optical USB to RS-232 data transmission.
● The stored data can be transferred to a PC.
● 2 optical LEDs are built-in for data transfer.

SEW 4236 ER Specifications

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SEW 8015PM Appliance Power Meter Specifications:

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SEW 375 HP High Voltage Detector Features:

● Protection class : IP65.
● 8 voltage settings : 240V, 2kV, 6kV, 11kV, 22kV, 33kV, 132kV, 275kV
● Bright LED visual indication
● Frequency range: 40~70Hz
● Flashlight function
●Wider angle for voltage detection(120°)
●Audible indication
● Easy-to-prove method
● Self-test function
● Power source : 1.5V “C” type battery × 3
● High impact nylon casing
● Non-contact work by proximity
● Compatible with most hot sticks
● Lightweight, robust & compact
● Suitable for indoor and outdoor use
● Easy access to batteries. 
● Warranty: 12 months
● The kit contains:
♦ Instrument SEW 375 HP
   ♦ Test report
   ♦ Carry case
   ♦ Battery (3 x 1.5 V, C size)
   ♦ Instructions for use

● Special ranges are available upon request.  
● The maximum detection range can be 500kV.
● Meets EN 61326-1   CISPR 11
EN 61000-4-2    EN 61000-4-3
EN 61000-4-8 

Check Datasheet for Voltage Ranges available.

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• Test Insulation resistance up to 30TΩ (30000GΩ).
• Short-circuit current up to 5mA
• Microprocessor
• 30 insulation test voltages :

• AC/DC voltmeter (600V).
• PI (Polarization Index) Indication
• DAR (Dielectric Absorption ratio) Indication
• Auto-ranging on all insulation ranges
• Backlight Display
• Bargraph indicates test voltage, rise and decay can be observed
• Menu Driven
• Visual and audible warning if external voltage is (≥30Vac or ≥30Vdc)
• Auto-hold function to freeze the reading
• Overload protection
• Adjustment for testing time (duration) :1~30 minutes
• Auto-off.
• Calendar
• Optical USB to RS-232 data tansmission
• 200 measurement results can be saved in the memory and recalled on the display
• Safety standard : EN 61010-1 CAT IV 600V, EN 61010-2-030, EN 61326-1

SEW 7016 Standard Accessories:

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ST-2000A AC/DC Ammeter are moving coil or Rectifier instrument.

● Principle : Moving coil type

● See Datasheet for Ranges available
● Accuracy : ± 0.5% F.S.
● Scale Length : Approx. 135mm(5-3/8”)
● Weight : Approx. 1.7kg
● Dimension :196(L) x 170(W) x 87(D)mm
● Case Material : Bakelite with glass window

● Meets : 

ST-2000V AC/DC Voltmeter are moving coil or Rectifier instrument.

● Principle : Moving coil type
● See Datasheet for Ranges available

● Accuracy : ± 0.5% F.S.
● Scale Length : Approx. 135mm(5-3/8”)
● Weight : Approx. 1.7kg
● Dimension :196(L) x 170(W) x 87(D)mm
● Case Material : Bakelite with glass window

● Meets : 

ST-2000 Hz Portable Frequency Meter.

The Hz meters use a frequency-to-DC current transducer which drives a high sensitivity moving coil type indicator. It features accurate frequency
measurements without noticeable influence of line voltage fluctuation (50 to 300V) or waveform distortion.

● Principle : Frequency sensing transducer

● See Datasheet for Ranges available
● Accuracy : ±0.5% of full scale value on 45 to 65 Hz range
±0.5% of full scale value on 0 to 100Hz range
±0.5% of full scale value on 0 to 500Hz range
● Scale Length : Approx. 135mm (5-3/8”)
● Case Material  : Bakelite with glass window

● Meets : 

ST-2000 COS Portable Power Factor Meter.

The PF meter is used for measurement in single-phase and balanced three phase circuits. From a phase discriminating circuits, the output of the builtin transducer produces a DC proportional to the phase between voltage and current to operate the DC indicator.

● Principle : Phase angle sensing transducer

● See Datasheet for Ranges available

● Rated Accuracy : ±3%  phase angle
● Scale :
Power Factor：Lead 0 – 0.3 – 1.0 – 0.3 – 0 Lag
Power Angle： Lead 90° – 0° – 90° Lag
● Effective Power Factor Measuring Range :
Lead 0.5 – 1.0 – 0.5 Lag
● Scale Length : Approx. 135mm(5-3/8”)
● Frequency Influence : Within ±1.5° phase angle at 45 to 65Hz

● Meets :

ST-2000 W Portable Wattmeter

The wattmeter is electrodynamometer type, this instrument is highly reliable, and designed for use in laboratories or factories for precision measurement of power at AC and commercial frequencies 45-65Hz.

● Principle : Electrodynamometer type

● See Datasheet for Ranges available
● Accuracy : ±0.5% of full scale
● Scale Length : Approx. 135mm(5-3/8”)
● Scale Divisions : 120
● Frequency Ranges : AC 25 to 1000Hz (COSØ=1.0) (suitable for DC)
AC 25 to 500Hz (COSØ=0.2)

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