The ESP 480D1 is a Combined Type 1, 2 and 3 tested protector (to BS EN 61643) for use on three-phase mains power distribution systems primarily to protect connected electronic equipment from transient overvoltages on the mains supply, e.g. computer, communications or control equipment.
For use at boundaries up to LPZ 0 to protect against flashover (typically the main distribution board location, with multiple metallic services entering) through to LPZ 3 to protect sensitive electronic equipment.
Features & Benefits
- Very low let-through voltage (enhanced protection to IEC/BS EN 62305) between all sets of conductors (phase to neutral, phase to earth, neutral to earth – Full Mode protection).
- Full Mode design is capable of handling partial lightning currents and allowing continual operation of protected equipment.
- Advanced pre-failure warning.
- Innovative multiple thermal disconnect technology for safe disconnection from faulty or abnormal supplies (without compromising protective performance).
- so you need never be unprotected.
- ESP XXX D1R or ESP XXX D1R/LCD units (where XXX = 208, 415, or 480) have a remote display that allows the protector to be mounted close to the incoming feed or distribution board with the display being mounted in a visible.
- ESP XXX D1/LCD or ESP XXX D1R/LCD units have backlit LCD intelligent display offering clear status information that can be rotated for side mounting to facilitate short connecting leads.
- Remote indication facility allows pre-failure warning to be linked to a building management system, buzzer or light.
- Changeover active volt-free contact enables the protector to warn of phase loss (i.e. power failure, blown fuses, etc).
- Flashing warning of potentially fatal neutral-to-earth supply faults (due to incorrect earthing, wiring errors or unbalanced conditions).
- Through terminal facility allows series connection on low current supplies to eliminate high additive voltage associated with connecting leads on units installed in parallel.
Installation
Install in parallel, within the power distribution board, or directly (via fuses) onto the supply feeding equipment. For low-current supplies, it can be installed in series—see installation instructions. For ESP D1R or D1R/LCD units, position the remote display, ensure that the cable is long enough unimpeded within the cabinet, and allow a minimum of 60 mm behind the panel front (for the interconnection cable).
At distribution boards, the protector can be installed either on the load side of the incoming isolator or the closest outgoing way to the incoming supply. Connect, with very short connecting leads, to phases, neutral and earth.
Specifications
- Nominal voltage – Phase-Neutral UO (RMS) 277 V.
- Maximum voltage – Phase-Neutral UC (RMS) 305 V.
- Temporary Overvoltage TOV UT 403 V / 529 V.
- Short circuit withstand capability 25 kA/50 Hz.
- Working voltage (RMS) 402-600 V.
- Frequency range 47-63 Hz.
- Max. backup fuse (see installation instructions) ≤ 125 A.
- Leakage current (to earth) < 250 μA.
- Indicator circuit current < 10 mA.
- CN8: 8536304000.
