WDJB-II Single-phase Relay Protection Tester ( single-chip microcomputer)
Zhejiang Wone IT Service Co., Ltd.
1yrs 300++
staff 65666m²+m² US$50000000+
Key attributes
| Brand | Wone |
| Model NO. | WDJB-II Single-phase Relay Protection Tester ( single-chip microcomputer) |
| Rated voltage | AC220V+10% |
| Rated frequency | 50Hz |
| Rated Output Rating | 0～100A/12V |
| Series | WDJB-II |
Product descriptions from the supplier
Description
Description
WDJB-II relay protection tester the AC and DC voltage and current sources inside the instrument adopt the latest power supply technology, which makes the instrument reach the domestic advanced level in circuit design, device selection, panel layout and internal structure design. The instrument has the advantages of complete functions, excellent selection of materials, clear test item data, and simple operation. It is the first choice for power relay protection departments.
Feature
Measuring relay: It can measure the starting value, return value and return coefficient of current and voltage relays.
Time relay: It can measure the start value, return value and its action time.
Intermediate relay: It can measure the starting value, return value, holding value and action time of various intermediate relays with starting coil and holding coil.
Reclosing relay: Capacitor charging test, charging time, reclosing time and intermediate component tests can be performed.
Differential relay: DC excitation test, braking characteristic test and volt-ampere characteristic test can be carried out.
various other uncommon relays.
Specifications
| Working power supply | AC220V+10% 50Hz |
| Working environment: Temperature: | -10℃～40℃ |
| Humidity | ≤85% |
| Atmospheric pressure | 86～106Kpa |
| AC voltage | 0 ~ 250V/3A |
| AC current | 0～100A/12V/ 0～50A/25V/ 0～25A/50V |
| DC voltage | 0～320V/3A |
| DC current | 0～20A/25V |
| fixed value output | DC24V DC48V DC110V DC220V |
| current, voltmeter | 41/2 digits |
| Digital millisecond meter | 0～99.9999s |
Wone
Zhejiang Wone IT Service Co., Ltd.
1yrs 300++
staff 65666m²+m² US$50000000+
Online store
On-time delivery rate
Response time
100.0%
≤4h
Company overview
Workplace: 65666m²m²
Total staff: 300+
Highest Annual Export(usD): 50000000
Services
Business Type: Design/Manufacture/Sales
Main Categories: High Voltage Electrical Apparatus/Low Voltage Electrical Apparatus/Wire cable/Instrument meters/New energy/Tester/Production equipment/Generator/Electrical fittings/Integrated Electrical Equipment
Whole life care manager
Full lifecycle management services for equipment procurement, use, maintenance, and after-sales,
ensuring safe operation of electrical equipment, continuous control, and worry-free electricity
consumption.
The equipment supplier has passed platform qualification certification and technical evaluation,
ensuring compliance, professionalism, and reliability from the source.
Related Products
Related Knowledges
-
Why Regular Transformer Maintenance Matters: 5 Serious Consequences of Neglecting ItI. Allowable TemperatureWhen a transformer is in operation, its windings and iron core generate copper loss and iron loss. These losses are converted into heat energy, causing the temperature of the transformer's iron core and windings to rise. If the temperature exceeds the allowable value for a long time, the insulation will gradually lose its mechanical elasticity and age.The temperature of each part of the transformer during operation is different: the winding temperature is the highest, folRockwell09/12/2025 -
How to Implement Condition-Based Maintenance for Power Transformers? A Complete 4-Step Process Analysis1. Definition of Condition-Based MaintenanceCondition-based maintenance refers to a maintenance method where decisions on whether and how to perform maintenance are determined based on the real-time operating status and health condition of equipment. It has no fixed maintenance methods or schedules. The prerequisite for condition-based maintenance is the establishment of equipment parameters and the comprehensive analysis of various operational information of the equipment, so as to make reasonaNoah09/12/2025 -
Can't choose a dry-type transformer? Get expert advice – free.Traction Rectifier TransformersRated capacity: 800 to 4400 kVA; Voltage class: 10 kV and 35 kV; Rectifier pulse number: 12-pulse and 24-pulse. Compared with 12-pulse rectifier circuits, 24-pulse rectifier circuits can reduce the harmonic pollution of the power grid by 50%, and no filtering equipment is needed at this location. It is suitable for power supply systems of urban subways and rail transit.Excitation Rectifier TransformersRated capacity: 315 to 3000 × 3 kVA; Voltage class: 10 kV, 13.8Vziman09/12/2025 -
SG10 Series Transformer Overload Protection Solution | Prevent Overheating and Damage, View NowOperating Conditions in National Standard GB 6450-1986Ambient temperature: Maximum ambient temperature: +40°C Daily average maximum temperature: +30°C Annual average maximum temperature: +20°C Minimum temperature: -30°C (outdoor); -5°C (indoor) Horizontal axis: Product load; Vertical axis: Average coil temperature rise in Kelvin (note: not in Celsius).For Class H insulation products, the long-term temperature resistance of insulation materials is stipulated by the state as 180°C. However, the inRockwell09/12/2025 -
High harmonics? Your transformer may be overheating and aging fast.This report is based on the analysis of one-day power quality monitoring data of your company's distribution system. The data shows that there is significant three-phase current harmonic distortion in the system (with a high total harmonic distortion of current, THDi). In accordance with international standards (IEC/IEEE), harmonic currents at this level have posed substantial risks to the safe, reliable, and economical operation of the power supply transformer, mainly manifested in additional hLeon09/12/2025 -
Ultimate Guide to AC Contactor Abnormal Noise: From Electromagnetic Noise to Mechanical Vibration, Accurate Diagnosis and HandlingIn electrical control systems, AC contactors are among the commonly used electrical components, and they are also a common source of various electrical faults. After long-term use—especially in harsh environments with high levels of dust—AC contactors may sometimes emit squeaking or rattling noises after being pulled in and held. The causes of this phenomenon are analyzed as follows.Squeaking Noise After Pull-In and HoldingA fully functional AC contactor makes no noise when energized and pulledFelix Spark09/11/2025
Related Solutions
Haven't found the right supplier yet? Let matching verified suppliers find you.
Get Quotation Now
