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256-400

200 Series

voltage and phase monitor

FEATURES n Relay monitors phase sequence and failure n Designed for monitoring 3-phase primaries n Input from all phases maintains functionality in case of one-phase failure n Input and monitored input voltage: 3 x 400V n Fixed time delay (T1): 500ms n Adjustable time delay (T2): 0 to 10 seconds n Fault indicator: Red LED, plus opening of output relay contact n Relay output form: SPDT (form C) 8 Amps / 250VAC n DIN rail mounting made from 256-240 n UL and CE approvals, RoHS compliant

10/13/08

SPECIFICATIONS Supply and measuring . . . . . L1, L2, L3 Measuring terminals. . . . . . . L1, L2, L3 Supply/measured voltage. . 3x400 V Minimum threshold. . . . . . . . adjustable, 70%–95% Nominal Cutoff threshold. . . . . . . . . . . . 60% of Nominal

mode of operation Hysteresis

Umin UOFF

Hysteresis . . . . . . . . . . . . . . . . . . 5% Max. constant voltage. . . . . . 3x276 VAC Peak overload <1s. . . . . . . . . . 3x300 VAC

L1

Time delay t1. . . . . . . . . . . . . . . 500ms max

UOFF

Time delay t2. . . . . . . . . . . . . . . adjustable, 0–10s

L2

Relay output form. . . . . . . . . . SPDT Form C (AgNi)

UOFF

L3

Power Consumption (max). . . 2 VA

t1

t2

15-18

Rated current. . . . . . . . . . . . . . . 8 A/ AC Switching capacity. . . . . . . . . 2500 VA/ AC, 240 W/ DC

green LED

Inrush current. . . . . . . . . . . . . . 10 Amps

red LED

Indication of state. . . . . . . . . . Red LED

Voltage Monitoring Three-phase monitor confirms correct sequence and detects failure of any one phase. Phase failure results in a flashing red LED and opening of output relay.

Green LED indicates presence of supply voltage. Only 2 phases are needed for Control operation. Incorrect phase sequence is indicated by constant red LED and opening of output. A front panel potentiometer adjusts failure indication delay up to 10 seconds. A low voltage condition (60% of nominal) results in immediate failure indication, red LED and open output. Threshold can be set from 70% to 95% with a second front panel adjustment.

315-655-8476 n www.peltectimers.com

Mechanical life . . . . . . . . . . . . . 10 million operations Electrical life. . . . . . . . . . . . . . . . 100,000 operations Operating temperature. . . . -20°C to +55°C Storage temperature. . . . . . . -30°C to +70°C Dielectric strength . . . . . . . . . 4 kV Operating position. . . . . . . . . any Mounting. . . . . . . . . . . . . . . . . . . DIN rail EN 60715 Protection degree. . . . . . . . . . IP 40 from front panel Max. cable size . . . . . . . . . . . . . 14AWG Standards . . . . . . . . . . . . . . . . . . E N 60255-6, EN 61010-1, UL, CE, RoHS


Peltec256-400

voltage and Phase monitor

features

wiring diagram Input terminals

L1 L2

L3

Fault indicator

L1

16 18

Minimum voltage setting Time delay setting

L1 L2 L3

L2

L3

15

16 16

15 15

2747 Route 20 East, Cazenovia, NY 13035 315-655-8476 n www.peltectimers.com

18

18

Output terminals

10/13/08


Peltec Timers 256-400