Inductive Voltage Regulator for TELECOM

The Most Advanced & Intelligent IVR!

► ULTRA WIDE INPUT VOLTAGE RANGE

115V to 280V Ultra Wide input voltage range design. IVR can work in normal even at the worst input voltage range. All components have been strictly selected which are able to resist transient surge & huge current.

► PRECISE & LINEAR VOLTAGE REGULATION

Adopt electromagnetic induction working principle to do linear voltage regulation. No contact movement; no noise coupling; no boost or sag, to ensure power quality of load remains the same as the input.

► STURDY, DURABLE, LONG LIFE SPAN

No Sliding Contacts. Brush-less. No Sparks. No Components to wear out. Capable to
sustain spikes & non-linear load anti-electric feedback. High Reliability and Long Life Span.

► ADVANCED FULL PROTECTION WITH BUZZER ALARM & INDICATORS FLASHING

When output voltage is out of range, overload, short circuit, phase failure, phase reversed, over temperature or abnormal control circuit, the output will be cut off automatically, buzzer alarms and LED indicators is flashing.

► SURGE AND LIGHTNING PROTECTION

Surge suppressor and / or Lightning Arrestor are built-in. Capable to absorb transient surge voltage from power grids.

► HARSH ENVIRONMENT DESIGN

Composed of high efficiency and wide safety range of industrial grade components, the IVR can sustain severe temperature, humidity, vibration and dirty environments.

► SOFT START WHILE AUTO RESTORE FROM AC POWER RECOVERY

Instantaneous power blackouts and restore will damage electrical loads. While AC power recovery, the IVR starts automatically from low voltage output, to ensure the security of load.

► STRONG OVERLOAD CAPABILITY

The IVR will not be damaged when short circuit happened on the loads or over current in transient. 150% / 90seconds, 200% / 20seconds, 300% /10seconds.

► LOW POWER LOSS. HIGH EFFICIENCY

Low Iron loss silicon steel sheets, oxygen-free enameled wires, they help the voltage regulators develop high performance, less power loss.

► SELF-DETECT REGULATOR SYSTEM

When the internal voltage regulating circuit doesn’t work, the IVR will have self-testing.

► MASTER CIRCUIT & SLAVE CIRCUIT INTERLOCKED PROTECTION

The IVR have circuit interlocked protection of voltage regulating circuitry and monitoring control circuitry.

► FAST RESPONSE TIME

< 50 millisecond

► AUTOMATIC BYPASS OUTPUT

The IVR with Automatic Bypass function. When the output voltage is abnormal, when the input voltage is within the setting range, the IVR will switch automatically to bypass, no manpower to operate.

► PASSWORD TO OPEN THE DOOR FUNCTION

The IVR requires a password to open the door locks, no key, just enter your password on the touch screen and open the front door of the IVR.

► FULLY ISOLATED MANUAL BYPASS

When the IVR is failed or required maintenance in Bypass mode, it can changeover the Double Throw Bypass Switch manually to mains through the load. The IVR remains overload and short circuit protection in Bypass mode. To ensure the IVR stability, voltage regulator circuit and protection circuit are detected by use an independent power supply
in order to avoid electrical fault, causing malfunction.

► LCD TOUCH PANEL DISPLAY

Intuitive Touch Panel to show system descriptions, System Status, loading Status, System Settings, Event Logs. Option: Big LCD display to show input voltage, output voltage, output current and IVR status.

► RS485 COMMUNICATION INTERFACE FUNCTION

The IVR with RS-485 communication interface, via MODBUS communication protocol, users can design their own software, monitor the parameters of AVS through the computer at any time.

► HISTORY EVENTS FEATURE

The IVR with History Events function, you can always check the IVR of the history of working time, including System On/Off, Abnormal Conditions, Bypass / Voltage Regulation, Open / Close the front door and so on.

► EXTERNAL DRY CONTACTS FOR ABNORMAL SIGNAL

The front panel of IVR provides all kinds of abnormal signals (DC5V) for external control.

► MULTI-LAYER TYPE CIRCUITRY CONTROL

To ensure its reliability, all separate PCBs (voltage regulation, protection, monitoring & control,
drive circuit board) are isolated from each other.

► CPU CONTROLLED

► CUSTOM-MADE WELCOME

Listen and design to meet with your demands.

• SURGE AND LIGHTNING PROTECTION

Surge suppressor and / or Lightning Arrestor are built-in. Capable to absorb transient surge voltage from power grids.

• ISOLATION TRANSFORMER

Galvanic isolated is used to solve ultimately power problems, including noise, lightning, ground leadkage current, and CEMF (Counter-electromotive Force) etc.

• IP-54 / 65 / 67 / STAINLESS CABINET FOR OUTDOOR USE

• WRONG PHASE SEQUENCE CORRECTION

When the phase sequence is wrong for the input, the circuit can correct it automatically.

• AUTOMATIC BYPASS FUNCTION

When input voltage is within the range, the output is out of range, the IVR will transfer to bypass automatically.

IP DEGREES IN ACCORDANCE WITH IEC 529 :

PRINCIPLE :

Inductive Voltage Regulator mainly composes of two structures:

1. Mainframe: Inductive Voltage Regulator, initial as IVR.

The Industrial grade Inductive Voltage Regulator is a variable ratio Auto Transformer consisting laminated steel Rotor (called as “R”, the shunt winding) and Stator (called as “S”, series winding).

Functions by the electromagnetic reaction of shaft core with Rotor, to result in relative rotation of both counterparts, thus achieving alteration in the phase of the induced electromotive potential, as seen in a stabilized output.

Transmission is controlled by electric power, whereby Driving Motor is used to drive gear, and alter output voltage which is to be registered in IC chips, once a voltage fluctuation occurs -- going up or down, a command will release to the Driving Motor for adjustment of its phase angle, and that to result in a corresponding change in Output voltage, so that free going voltage regulation is attained without any shifts.

The winding inside Rotor is called Primary Winding (Input), which connects in parallel with input power wire; the Stator is a Secondary Winding (Output) which connects with the same load in series. Secondary Voltage varies with intersecting angle “θ” of both winding. (shown as below figure).

E1 (between 3 and 4) = Input Voltage (Primary Voltage)
(The voltage inducted by the Secondary winding shall vary to the angle between the two coils)
- E2 = E1 cos.θ, vary continuously
- Output Voltage = E1+E2 = E1 (1+ cos.θ)
- When R & S is in parallel, E2 is Increasing (clockwise),
Output Voltage = E1+ (+E2)
Output Voltage = E1 + 0 = E1
- When R & S is in –90deg., E2 is Reducing
(anti clockwise), Output Voltage = E1 + (-E2)

Because of opposite position between Primary and Secondary Winding, output voltage can be adjusted continuously depends on alternation of primary Flux Density even connected with load.

2. Voltage Regulation Structure:

By use of Logic circuits to detect output voltage variation.
When output voltage rate is within +/-1% setting value (1% ~ 3% Adjustable), it will command No Contact Point Relay (SSR) to conduit for no contact point, step-less automatic regulation.

Industrial grade Inductive Voltage Regulator has advantages of

a) No Output Distortion;

b) Pure Sine Wave Output;

c) No Sliding Contacts or Brushes inside;

d) Strong Overload Capability.

It is the only type to be able to fabricate thousands KVA, Powerful Overload Capacity with Minimum Failure Rate.