In the equipment procurement bidding for substation maintenance, new energy station maintenance, industrial and mining enterprise distribution rooms, and installation (repair, testing) power engineering enterprises, relay protection testers are always the "big head" in the procurement list.

Faced with numerous brands in the market ranging from thousands to tens of thousands of yuan, from traditional large-scale industrial control models to new portable models, many purchasing leaders and equipment supervisors are inevitably caught in a dilemma of choice:

Can expensive mainframes worth tens of thousands or tens of thousands of yuan really be fully utilized when bought

Will cheap portable small instruments have poor quality and inaccurate on-site measurements

Today, from the perspective of pragmatism and return on investment, we will outline the "three principles" for purchasing Jibaoyi and highlight a recognized star product with high cost-effectiveness.

At first glance at the working condition scenario: Refusing to "shoot mosquitoes with cannons"

Many units are prone to falling into the misconception of "greed for large and comprehensive indicators" when purchasing, and regardless of the actual business, they always buy the most expensive and heavy large-scale six phase desktop testers. After buying back the unit, it was found that:

More than 90% of daily work is actually routine overcurrent verification of 10kV~35kV switchgear, FTU/DTU debugging of distribution automation, wind and photovoltaic inspection, and sudden defect elimination;

The large equipment weighs more than 20 kilograms, and no one is willing to move it. Unable to find a power source on site, it has been lying in the warehouse for years, leaving dust in the air. The core of procurement is "working condition matching": for daily operation and maintenance of high-frequency and mobile combat, a lightweight handheld lithium motor type is the key to improving work efficiency!

Second Look at Core Configuration: Must Bite Hard Core Indicators

When choosing a portable tester, it is important not to only consider the price as cheap. The following key configurations must be strictly verified:

Number of channels: It must have standard 4U3I (4-phase voltage+3-phase current) and an independent 4th Ux zero sequence voltage channel. It is not allowed to buy castrated single-phase or simple machines;

Battery life: It must have a real large capacity power lithium battery (recommended to be above 20Ah) to ensure an off grid life of up to 8 hours;

Security protection level: The input must have 500V physical strong electrical isolation, adaptive 32V~250V potential input, to prevent on-site meter burning.

Three factors to consider: brand and service: well-established manufacturers have more guarantees

Power testing instruments belong to high-precision industrial equipment, and the manufacturer's technical accumulation and after-sales response are crucial. Baoding Huazheng Electric Manufacturing Co., Ltd., as a senior manufacturing enterprise in the field of domestic high voltage power testing equipment, has complete independent intellectual property rights, standardized production and testing lines, and a complete national technical support system.

Highly recommended: Baoding Huazheng HZJB-1700 handheld three-phase relay protection tester

Taking into account various indicators, HZJB-1700 can be regarded as a highly competitive and cost-effective benchmark product in the current power testing instrument market:

Ultimate portability: With a net weight of less than 2.75kg, it can be lifted with one hand and carried on one shoulder;

All day battery life: Built in 20Ah large capacity lithium battery, 8 hours free from power cord constraints;

Fully functional: 4-channel voltage, 3-channel current, covering overcurrent, reclosing state sequence, low cycle load shedding, differential second harmonic, and 1ms SOE testing;

Safe and reliable: 500V high-voltage optocoupler isolation, sturdy anti-collision body.

Whether for business executives who control procurement budgets or for staff who work day and night on the front line of inspections, Baoding Huazheng HZJB-1700 is a great value first choice that can save real money and improve on-site job happiness in a practical way!