3.5 MW Inverter

1500 V outdoor inverter
Integrated array protection with Fuses eliminates the additional array junction box
Array Current monitoring provides the user to monitor the health of each array
Low harmonic current output
Input and output isolation through automatic control of switch and ACB through control computer respectively
DC insulation monitoring and protection for IT system and compatible to positive/ negative grounding (TN) system
Automatic wake-up and sleep mode operation

Smart User Interface

128 x 64 dot matrix user Interactive display. User data configuration, and faults, data download through Etherrnet using PC based application software. Ethernet / SCADA system for interfacing the web-based monitoring system. 30 days of Internal memory data and fault information with associated data packs for any triggered event .

Advanced Technology

Highest efficiency over wide operation range using three level technology. Configurable reactive and power factor control. Grid side fault monitoring and support (LVRT, HVRT, anti-islanding, reactive power control, power factor regulation). Integrated grid side current lower harmonic control algorithm.

High Yield

2 MPPT will enhance the total yield during the clouds and shading conditions. Each MPP (1750 kW Inverter) can operate individually, with independent cooling circuit.

Protections

Input side Disconnection device (DC Motorized Switch)
Output side Disconnection device (AC Circuit Breaker)
Anti islanding-loss of mains.
DC reverse polarity protection. AC and DC short circuit and over load protection.
AC and DC Surge Protection (DC-Side Type-I, AC-Side- Type-II ).
AC over and under voltage protection.
DC over voltage protection.
Earth fault protection. Insulation monitoring and protection. Ground Fault monitoring and protection. AC Over/Under frequency protection. Current Imbalance protection.
Loss of synchronisation.
Over Temperature.
Cooling Failure.

Compliance*

Efﬁciency Measurements: IEC 61683:First Edition,1999-11
Environmental Testing: IEC 60068-2-1 Cold test, -2-2 Dry Heat Test, -2-30 Damp Heat Cycle Test, -2-14 change of Temperature Test
Electromagnetic Compatibility (EMC): IEC 61000-6-2, -6-4
Electrical Safety: IEC 62109-1:Edition-1.0, 2010-04 and IEC 62109-2:Edition-1, 2011-06
Protection against Islanding of Grid: IEC 62116 and IEEE 1547
Photovoltaic (PV) Systems Characteristics of the utility Interface: IEC 61727:Edition2, 2004-12

(*testing in progress)

Operating Performances

Maximum Eﬃciency (Excluding Auxiliary Supply): 98.99%
Weighted Eﬃciency EURO/CEC(Excluded Auxiliary for both parameters): 98.71% / 98.74%
MPPT Eﬃciency: 99.9%
Auxiliary Power Consumption: <6230 W
Night mode power consumption: <175 W
No load Losses: <3630 W

Address

2-3-2/A, Cherlapally,
Hyderabad 500051, IN

Contacts

Email: marketing@medha.com
Phone: +91 (40) 6723 7000

Links

Medha Servo Drives P. Ltd.