Refine On Electric

NRJB600 Six‑Phase Relay Protection Tester ⚡
Six‑phase current & six‑phase voltage relay protection tester, compliant with DL/T624‑1997. Built‑in industrial computer with Windows‑XP operation system, applies DSP+FPGA hardware architecture, suitable for all kinds of traditional relays and modern micro‑processor‑based protection devices, especially for transformer differential protection and auto‑switch‑on‑fault (BZT) equipment test.

✅ Core output specifications
‑**AC Current**: 6‑phase ×0‑30A；6‑phase parallel up to 180A；single‑phase max power 320VA；frequency 0‑1000Hz；2‑20th harmonic output.
‑**AC Voltage**: 6‑phase ×0‑120V；line voltage 0‑240V；frequency 0‑1000Hz, supports 2‑20th harmonic superposition.
‑**DC Current**: 0‑±10A per channel；**DC Voltage**:0‑±160V phase / 0‑±320V line.
‑Switch quantity: 8‑channel digital input, 4‑pair relay digital output.
‑Independent auxiliary DC power: ±110V, for protection working power supply.

✅ Powerful test functions
‑Rich built‑in test modules: AC/DC test, frequency/sync‑check, inverse‑time over‑current, power‑direction, impedance step‑test, zero‑sequence, state‑sequence, group fault simulation, differential protection, harmonic test, fault recurrence, system oscillation, standby automatic switching test.
‑Support proportional‑restraint & harmonic‑restraint test for transformer differential protection; distance / zero‑sequence protection fixed‑value verification; reclosing & whole‑set transmission test.
‑Software self‑calibration, no need to open cabinet to adjust potentiometer. Real‑time waveform display, automatic test‑report generation & management.

✅ Hardware highlights
‑10.4‑inch 800×600 TFT true‑color LCD, panel keyboard + touch‑pad, USB2.0 communication, optional network port control.
‑High‑fidelity linear power amplifier; complete over‑heat / over‑current / over‑voltage / short‑circuit hardware protection, hardware time‑limit for large‑current output.
‑Self‑recovery CF card prevents system damage caused by illegal shutdown.
‑Dimension:390×290×170 mm, net weight **15.5 kg**.
‑Power supply: AC220V±10%, 50/60Hz.

Perfect for power utilities, substations, relay‑protection workshops and high‑voltage labs for commissioning & periodic calibration of protective relays & microcomputer protection devices!
Refine On (Hebei) Electric Power Technology Co., Ltd.
Address: Room 101, Building 13, Liandong U Valley, No. 64, Jing SAN South Street, Economic Development Zone, Mancheng District, Baoding City
Mobile: +8616630271406
Web: https://refineon.en.made-in-china.com/
Email: [email protected]

NRG480 Dynamic Circuit Breaker Analyzer ⚡
Comprehensive dynamic mechanical‑characteristic tester complying with GB1984‑2014, DL/T846.3‑2017, for vacuum, SF6, GIS and oil‑immersed high‑voltage circuit breakers.

✅ Core measuring capabilities
‑Up to 12 contact fractures (6 main +6 auxiliary). One‑shot operation captures time, bounce, speed, travel, coil current, closing resistance and dynamic resistance curves.
‑Time measurement range:0.01ms‑200s; accuracy:0.05%±0.1ms(within 1000 ms).
‑Dynamic resistance test: output 200A test current, measuring range 0‑50 mΩ, accuracy ≤0.5%±0.5μΩ.
‑Speed:0.01‑25.00 m/s; travel:0‑1000 mm; coil current max 20A.
‑Support C‑O / O‑C / O‑C‑O reclosing, aging endurance test, low‑voltage operation test, disconnector test.

✅ Hardware & functional highlights
‑Embedded Cortex‑A8 industrial mainboard, 9‑inch color resistive touch screen, Windows system, Chinese‑English bilingual input, boot‑up within 16 seconds.
‑Built‑in adjustable DC operating power DC6‑270V(max 20A), no external secondary power supply required.
‑Comes with linear, rotary sensors; laser / acceleration sensors optional, universal multi‑joint mounting brackets for various breakers.
‑Envelope curve comparison & breaker vibration‑frequency analysis; recalculate speed without retesting.
‑Local storage for 30000 groups of test records; high‑speed thermal printer onboard.
‑2×USB ports for mouse, U‑disk export; optional RS232 & WIFI remote communication.
‑Excellent EMC anti‑interference, stable operation in 500 kV substations.

✅ Working parameters
‑Power supply:AC220V±10%,50Hz
‑Dimension:400×410×280 mm
‑Ambient:‑20℃~+50℃, humidity ≤90%RH

Perfect for power utilities, substations, switchgear factories and high‑voltage labs for acceptance, commissioning and periodic maintenance of HV circuit‑breakers!
Refine On (Hebei) Electric Power Technology Co., Ltd.
Address: Room 101, Building 13, Liandong U Valley, No. 64, Jing SAN South Street, Economic Development Zone, Mancheng District, Baoding City
Mobile: +8616630271406
Web: www.transformer-test.com
Email: [email protected]

NRG400 Circuit‑Breaker Analyzer ⚡
Comprehensive mechanical‑characteristic tester for high‑voltage circuit breakers, compliant with GB1984‑2003 & DL/T846.3‑2004. Suitable for SF6, GIS, vacuum, oil‑immersed breakers and special‑purpose contactors.

✅ Core measuring capabilities
‑Supports up to 12 contact fractures (6 main +6 auxiliary). One single breaker operation acquires time, bounce count/time, speed, coil current & resistance waveforms.
‑Time measurement: 1‑10000 ms；resolution 0.01 ms(≤999 ms); accuracy 0.05%±0.1 ms within 200 ms.
‑Speed: 0.01‑20.00 m/s (linear sensor); angle‑sensor 0‑345°.
‑Travel: 0‑1000 mm, resolution 0.1 mm.
‑Coil current max 20 A；resistance up to 1000 Ω.

✅ Key hardware & functions
‑7‑inch high‑bright sunlight‑readable color touch‑screen, Chinese‑English bilingual; time‑stroke‑speed‑waveform simultaneous display.
‑Built‑in adjustable DC operating power DC20‑270V / 20A, dual‑circuit power‑supply design, 1 ms short‑circuit protection.
‑Comes with linear & rotary angle sensors; universal multi‑joint bracket for flexible field mounting.
‑Test functions: energy‑storage test, auto/manual low‑trip test, breaker aging/life test, reclosing test.
‑Local storage for 100 groups test data with real‑time clock; built‑in thermal printer.
‑Data export via USB‑disk or RS232 for PC analysis. Excellent anti‑interference, works reliably in 500 kV substations.

✅ Working parameters
‑Power supply: AC220V±10%, 50 Hz
‑Dimension: 385×320×205 mm
‑Ambient:‑20℃~+50℃, humidity ≤90%RH

Perfect for power utilities, substations, switch‑gear factories for acceptance, commissioning and periodic maintenance of HV circuit‑breakers!
Refine On (Hebei) Electric Power Technology Co., Ltd.
Address: Room 101, Building 13, Liandong U Valley, No. 64, Jing SAN South Street, Economic Development Zone, Mancheng District, Baoding City
Mobile: +8616630271406
Web: www.transformer-test.com
Email: [email protected]

**NRG60Z‑120Z Intelligent DC High‑Voltage Generator ⚡**
Intelligent negative‑polarity DC high voltage test set, available from 60kV up to 350kV, for DC withstand‑voltage & leakage‑current testing of HV equipment, surge arresters, cables and capacitive specimens.

✅ **Powerful test modes**
▪Manual test, 10‑step programmable step‑voltage test, full‑auto test, dedicated MOA zinc‑oxide surge arrester auto‑test.
▪Special optimized auto‑ramp algorithm for capacitive samples, prevents unexpected tripping caused by inrush over‑current.
▪Multi‑level adjustable voltage step‑up increments for different voltage grades.

✅ **Rich hardware & operating features**
▪7‑inch 800×480 color touch‑screen, Chinese‑English auto‑switch, sunlight readable.
▪Wireless anti‑shock micro‑ammeter; test current data transmits wirelessly to main control unit.
▪Built‑in temperature‑humidity sensor, real‑time calendar‑clock.
▪Local storage for **200 groups** test records; onboard thermal printer; export data to USB flash‑drive in TXT format.
▪Isolated RS232 communication interface supports remote PC control.
▪Solid‑state DuPont‑material high‑voltage multiplier unit, oil‑free & air‑insulation‑free, lightweight HV column with stable base.
▪Dual‑channel grounding protection for operator safety.

✅ **Complete multi‑layer safety protections**
Over‑voltage, over‑current, open‑circuit, non‑zero‑voltage startup blocking, ground‑fault detection, overload protection. Emergency stop button for high‑voltage cutoff.

✅ **Main technical specifications**
▪Output: Negative DC high‑voltage up to 1.1×rated value; ripple factor ≤0.5%.
▪Measurement accuracy: Voltage ±0.5%±2digits; Current ±0.5%±2digits.
▪Input power: AC165‑245V, 50‑60Hz; intermittent duty max 30 min continuous run.
▪Working environment:‑10℃ ~ +40℃, humidity ≤90%RH, altitude ≤3000 m.
▪Multiple model options: 60kV/5mA ~ 350kV/5mA.

Ideal for power utilities, substations, transformer workshops, high‑voltage labs. Widely used for preventive tests of cables, arresters and other high‑voltage power apparatus!

**NRB562C Transformer On‑Load Tap‑Changer Tester ⚡**
Special comprehensive tester to analyse operating characteristics of transformer on‑load tap‑changer (OLTC). Support testing with‑winding or without‑winding conditions.

✅ **Key test capabilities**
▪Capture transition waveform, transition time, transition resistance, three‑phase synchronism and other critical OLTC parameters.
▪Time range: 0‑450 ms; resolution ≤0.1 ms; accuracy ≤±(0.1% reading +1 digit).
▪Two current modes:
‑Low current 400mA：resistance range 0.5‑40 Ω
‑High current 1A：resistance range 0.2‑20 Ω
‑Resistance accuracy ≤±(5% +0.1 Ω)
▪Automatic parameter calculation; manual cursor adjustment for distorted field waveforms.
▪Supports multiple transformer winding connections: Yn, Y, Delta.

✅ **Powerful hardware & data functions**
▪Large‑color display for clear waveform & data visualization.
▪Onboard storage for **1000 groups** test data, power‑fail non‑volatile memory, built‑in thermal print function.
▪Real‑time adjustable system clock; USB disk export; expandable RS232 & Bluetooth for PC / tablet connection.
▪Built‑in anti‑surge, over‑voltage protection and power‑noise filter for strong electromagnetic interference resistance.

✅ **Working conditions**
▪Power supply: AC220V
▪Ambient:‑20℃ ~ +40℃, humidity ≤80%RH
▪Must connect protective earth; perform de‑energized measurement only; non‑test windings shall be short‑circuited & earthed for with‑winding tests.

Perfect tool for power utilities, substations and maintenance workshops for on‑site OLTC commissioning & fault diagnosis!
Refine On (Hebei) Electric Power Technology Co., Ltd.
Address: Room 101, Building 13, Liandong U Valley, No. 64, Jing SAN South Street, Economic Development Zone, Mancheng District, Baoding City
Mobile: +8616630271406
Web: www.transformer-test.com
Email: [email protected]

**NRCJ‑400kV/20kJ Full‑Automatic Impulse Voltage Generator ⚡**
Compact high‑voltage lightning impulse test system, compliant with IEC & GB/DL standards. Designed for lightning full‑wave and chopped‑wave impulse tests for transformers up to 36 kV and other high‑voltage electrical apparatus.

✅ **Core performance parameters**
▪Nominal impulse voltage: **400 kV**, nominal energy: **20 kJ**, 4‑stage structure (100 kV per stage)
▪Dry‑type full‑insulation stage capacitor: 1 μF / 100 kV, low inherent inductance, oil‑free, no‑leakage
▪Standard lightning full‑wave: 1.2/50 μs, efficiency ≥90%, overshoot＜5%
▪Lightning chopped‑wave: front time 1.2 μs, chopping time adjustable **2‑6 μs**, jitter＜100 ns, efficiency ≥90%
▪Amplitude adjustment error＜1%; synchronous error＜1%

✅ **Optimized mechanical structure**
▪Compact layout referencing HAEFELY design, small footprint, mobile caster base, total weight approx. 450 kg, height ~4.5 m
▪Low‑speed gear‑rack drive for sphere‑gap adjustment, low‑noise & high‑positioning accuracy
▪Spring‑press contact for wave‑shaping resistors, stable contact, burr‑free output waveforms
▪Non‑inductive constantan‑wire wave‑front / wave‑tail resistors with resin vacuum casting, good thermal capacity for long‑time operation

✅ **NRCJ‑2008 intelligent control & measurement system**
▪Core: Mitsubishi FX2N PLC; supports manual / automatic / program‑controlled operation
▪Fiber‑optic communication between main unit and control console, effectively isolates high‑voltage electromagnetic interference
▪Constant‑current charging, charging‑voltage stability up to 0.5%; real‑time monitoring & recording of charging parameters
▪Complete interlock protections: over‑current, over‑voltage, abnormal‑charge, earthing interlock, door‑switch interlock, auto‑grounding mechanism
▪Digital impulse measuring system with high‑speed oscilloscope: capture, analyse, store, compare & export impulse waveforms; measurement inaccuracy＜1 %

✅ **Full system configuration**
‑Integrated 100 kV DC charging power supply
‑400 kV weakly‑damped impulse capacitor voltage divider
‑NRMC‑600 chopped‑wave device (2‑6 μs adjustable electronic delay)
‑Industrial‑computer waveform analysis workstation
‑Complete connection accessories

**Application scenarios**: Power transformer factories, high‑voltage labs, utility test institutes, for lightning impulse withstand test of transformers, mutual inductors and other HV equipment.
1‑year warranty, on‑site commissioning & technical training available.
Refine On (Hebei) Electric Power Technology Co., Ltd.
Address: Room 101, Building 13, Liandong U Valley, No. 64, Jing SAN South Street, Economic Development Zone, Mancheng District, Baoding City
Mobile: +8616630271406
Web: www.transformer-test.com
Email: [email protected]

**NRJB600 Six‑Phase Relay Protection Tester ⚡**
Professional 6‑phase voltage & 6‑phase current relay protection tester, fully compliant with DL/T624‑1997 standard. Designed for substation on‑site commissioning & maintenance of traditional relays and modern micro‑processor‑based protection devices.

✅ **Powerful 6‑phase output capacity**
▪6‑channel AC current: 0‑30A per phase, max 180A with six‑phase parallel output
▪6‑channel AC voltage: 0‑120V per‑phase, line voltage up to 240V
▪Independent DC voltage/current source; dedicated DC auxiliary power (110V/125V) for protection device working power supply
▪8 digital input channels & 4 pairs of relay output contacts, support empty contact & potential contact signal acquisition

✅ **Advanced hardware architecture**
▪DSP+FPGA main control with 16‑bit DAC, high‑density waveform synthesis for excellent signal quality
▪High‑fidelity linear power amplifier, guarantees small‑current precision and large‑current stability
▪10.4‑inch 800×600 color LCD, built‑in industrial computer running Windows XP with system restore function against crash caused by mis‑shutdown
▪Software self‑calibration, no need to open cabinet for potentiometer adjustment
▪Complete hardware protections: over‑heat, over‑current, over‑voltage, short‑circuit alarm & large‑current hardware time‑limit safety mechanism

✅ **Comprehensive test functions**
Supports full‑range protection test items:
AC/DC relay test, frequency & synchronous‑check relay, inverse‑time over‑current, power‑direction, impedance characteristic, zero‑sequence protection, transformer differential protection (proportional & harmonic braking), group fault simulation, state‑sequence test, fault recurrence, system oscillation, auto‑switch‑on‑backup device test and more.
Simulate various short‑circuit fault waveforms; generate 2‑20 order harmonics.

✅ **User‑friendly operation & field‑ready design**
▪On‑panel industrial keyboard + touchpad, operate same as PC; support external laptop control via USB
▪Rich report management: save, preview & print test reports onsite
▪Lightweight suitcase unit: 15.5 kg, compact size 390×290×170 mm

**Key Specifications**
‑AC Current:0‑30A/phase；AC Voltage:0‑120V/phase
‑Frequency range:0‑1000Hz；Phase accuracy:0.1°
‑Time measurement accuracy:1ms
‑Power supply:AC220V±10%,50/60Hz

Perfect for power utilities, substations, power‑plant maintenance, relay workshops, and third‑party metrology labs. Essential tool for protection‑relay commissioning & periodic inspection!

NRYH600 Automatic Transformer Oil Tan Delta & Resistivity Tester⚡
All‑in‑one integrated tester for transformer insulating oil, designed per GB/T5654‑2007. Automatically measures dielectric loss factor(tan‑delta), relative permittivity and DC resistivity of liquid insulating oil.

✅ Core Test Functions
▪Test dielectric loss factor (tanδ), relative capacitance/permittivity, DC volume resistivity for insulating oil
▪Full‑auto workflow: heating, temperature control, high‑speed sampling, measurement, display, print & data storage in one sequence
▪Standard 3‑electrode oil cup (2 mm electrode gap), eliminates stray capacitance & leakage interference
▪Blank cup calibration function: verify oil‑cup cleaning & assembling status before sample testing

✅ Advanced Hardware & Measurement Technology
▪Medium‑frequency induction heating + PID precise temperature control; temp range: **0‑125℃**, temperature error ≤±0.5℃
▪Adopt DSP & FFT algorithm for stable, repeatable measuring data
▪Built‑in SF6 standard three‑pole reference capacitor, long‑term stable accuracy unaffected by ambient temperature & humidity
▪AC test voltage:500‑2200V adjustable；DC test voltage:0‑500V adjustable

✅ Practical onsite‑friendly features
▪Large color touch‑screen, intuitive human‑machine operation
▪High‑voltage safety interlock alarm when lid is opened, ensures operator safety
▪Real‑time clock, store test date & ambient temperature together with results
▪Save up to **100 groups test data**, onboard thermal printer for onsite report output
▪Compact all‑in‑one unit; weight:21 kg

Main Accuracy & Range
‑Capacitance:5pF‑200pF；Dielectric loss factor:0.00001‑100
‑DC Resistivity:2.5 MΩ·m ~ 20 TΩ·m
‑Dimension:420×380×385 mm｜Power consumption＜200W

Ideal for power plants, substations, labs and transformer workshops. Essential equipment for insulating‑oil quality assessment!
Refine On (Hebei) Electric Power Technology Co., Ltd.
Address: Room 101, Building 13, Liandong U Valley, No. 64, Jing SAN South Street, Economic Development Zone, Mancheng District, Baoding City
Mobile: +8616630271406
Web: www.transformer-test.com
Email: [email protected]