MH Overcurrent Relay ROA207n, ANSI 50/51 & 86, IDMTL & DTL with unique Mechanical Trip Button
- Category: Other Electrical Instruments >>>
- Supplier: MUN HEAN SINGAPORE PTE LTD
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Product Overview
Description
Products Description
The MH ROA207n IDMTL Overcurrent Relay is a digital microprocessor-based protective relay designed to monitor and detect phase overcurrent and earth fault. It is equipped with a unique fault indicative system which called MTB. This MTB is a Mechanical Trip Button that latched with output contact after relay operated. The MTB is designed in accordance with ANSI 86 lockup relay.
Highlights of ROA207n
- Microprocessor-based with highest accuracy
- Comply to ANSI 50/51, 86
- Unique fault indicative system in accordance with ANSI 86 Lockup Relay
- Extra secure test trip system
- Event records with date and time stamping
- Operation logs with date and time stamping
- Self dianostic and auto restore
- OLED display
- Simple, compact and user friendly
- Fully type tested by accredited laboratory
Applications
Incoming feeder protection
Outgoing feeder protection
Busbar protection
Product Parameters
Characteristic | |||
Protection functions | ANSI 50/51, 86 | ||
Power Supply | AC/DC 85-265V (other voltages available on request) | ||
Operating frequency | 50 / 60 Hz | ||
Power consumption | ≤ 6VA | ||
Rated input current | 5A (1A available upon request) | ||
Overcurrent pickup setting | 20-200% in step of 1% | ||
Time multiplier setting | 0.03-2.00 in step of 0.01 (IEC, 1.3/10) 0.3-20.0 in step of 0.1 (ANSI, IAC) | ||
Definite time delay setting | 0.03-2.00 sec in step of 0.01 sec | ||
Instantaneous mode (high-set) | 2.0-10.0 times of setting current in step of 0.1 | ||
Operating temperature range | -10 to 55°C | ||
Relative humidity | <93%, non-condensing | ||
Degree of protection | IP31 (front), IP20 (back) Optional IP65 front cover | ||
Overcurrent withstandability | 10 * I rated (for 1 sec) | ||
Output | Relay output | 1 x C/O (changeover), 1 x N/O (normally open) | |
Contact rating | 2A at 250VAC | ||
Optional interface | RS485 Modbus RTU, additional output contact module | ||
LED status indication | Normal operation, fault current detected | ||
Safety feature | Mechanical Trip Button (MTB) complying with ANSI 86 | ||
Housing material | ABS resin complying with UL94V0 | ||
Net weight | Approximately 390g | ||
Dimensions | 96mm (width) x 96mm (height) x 86mm (depth) | ||
Panel cut-out | 92mm (width) x 92mm (height) | ||
Standard compliance | IEC60255, CE Marking | ||
Connection Diagram
3P4W
3P3W
Company Profile
The Mun Hean Group
The Mun Hean group represents an extensive network throughout Asia providing technical solutions in industrial electrical as its core expertise. The group has offices in 10 regions; Singapore, Malaysia, Indonesia, Hong Kong, Philippines, Vietnam, Myanmar, Taiwan, Beijing and Shenzhen.
The core of Mun Hean’s business lies in industrial electrical technical marketing in four key areas;
- Power Quality;
- Electrical Protection;
- Lightning Protection;
- Industrial Electrical.
The group started from Mun Hean Singapore Pte Ltd which was established in 1981 and has long been the market leaders in industrial electrical marketing. The group is the exclusive agent for many leading international brands as shown in our Product Portfolio.
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