Product overview
The nhsac series is programmable to exchange constant current constant voltage power using the sswm high-frequency pulse width (hfvvvvv) system, which produces output, adjusts output currents and frequencies, reacts quickly, and has a high constant flow accuracy that allows long-term stabilization. It is also capable of overcoming current changes caused by voltage fluctuations in the grid, circuit resistance changes and internal resistance changes in products, independent of human factors; small size, efficiency, reliability and maintenance costs having a clear advantage over the traditional mode of voltage regulators; and the use of dsp to control chips, touch screen human interfaces, which can be used in conjunction with advanced production line systems or separately。
Product application area
The exchange of constant current power is mainly used for the testing and application of electrical current thermal effects of specific products, such as circuit breakers, smelters, protective switches such as heat relays, magnetic starters and sites requiring the testing of thermal effects such as transformers of various kinds, intersensors, etc。
Product characteristics
Introduction of advanced two-ring feedback control technology, mature spwm modem technology, ig-driven technology, rapid response and stable output
Self-protective function: real-time detection of key components such as ig and transformers (e. G., short-circuit/overflow/overheat protection), real-time detection of power input and output ports (e. G., over/under/lack of equivalent protection)。
3. A rich remote control interface: clients can choose multiple remote communication/telecontrol methods such as rs232, rs485, switches, analogue signals, etc. To achieve remote power control。
4. Smart temperature adjusters to reduce noise and increase longevity。
5. Pressure range 0-5v, 0-10v, 0-20v; current 10,000a。
Technical parameters for products
Working methods
Spwm way, sine wave output。
Power input
Single-phase ac220v 15% 50/60hz > 5% (within total capacity of 10kva)
3x4 ac380v § 15% 50/60 hz § 5% (total capacity over 10kva)
Output phase number
Single
Output frequency
Range: 40. 0 to 70. 0 hz, reconciliation step: 0. 1 hz; rating: 50/60 hz
Frequency precision
≤ 0. 1%
Frequency stability
≤0. 01%
Pressure range
0-5v; 0-10v; 0-20v
Constant flow range
0. 1in ~ 1. 0in (in rated current) with a reconciliation of 0. 1a/1a/10a
In standard values: 50a, 100a, 150a, 200a, 300a, 400a, 500a, 600a, 800a, 1000a, 1500a, 2000a, 3000a, 4000a, 5000a, 6000a, 8,000a, 10,000a。
Constant flow precision
± (0. 5% x fixed value + 0. 1% x full range value)
Power voltage effect
≤1%
Load effects
≤1%
Power loss truth
3% (obstructive load, rated frequency and current)
Protective devices
Overpressure protection, overload protection, overflow protection, road opening protection, overheat protection of power units。
Memory function
Automatically remember last startup running arguments
Preset function
In standby, preset output frequencies, output currents, etc。
Online realignment function
In a state of operation, the output frequency can be adjusted online, and the output current can be adjusted。
Communications interface
An optional rs232 or rs485 communication, standard industrial modbus rru communication protocol。
Show
Precision
Voltage
Resolution: 0. 01v precision: ± (0. 5% x read value + 0. 1% x full range value)
Electricity
Resolution: 0. 01a/0. 1a/1a precision: ± (0. 5% x read value + 0. 1% x full range value)
Display
Led display
Working environment
Temperature: 0-40°c relative humidity: 90% rh
The reversible constant-flow constant-voltage power source has two working modes of constant-pressure constant-flow, and the colour touch screen shows that rs485 communications have slow-up, run-time, slow-down-time presets to meet the needs of integrated testing in such areas as electrical switches, circuit breakers, mutual sensors, etc。
Output wave
Parameter settings interface
Monitor interface