Datasheet

ManualsBrandsSelectron ManualsMonitoring RelaysVoltage Monitoring Relay

ESG 5.2

Indicators

Green LED ON: indication of supply voltage

Green LED flashing: indication of start-up suppression time

Yellow LED ON/OFF: indication of relay output

Red LED ON/OFF: indication of failure of the

corresponding threshold

Red LED flashing: indication of tripping delay

of the corresponding threshold

Output relay

2 potential free change-over contacts

Rated voltage: 250 Vac

Switching capacity: 1250 VA (5 A / 250 Vac)

Fusing: 5A fast acting

1-phase current monitoring relay

EMR SI23O, SI23P

Functions

ac current monitoring in 1-phase mains with adjustable

thresholds, timing for start-up suppression and tripping delay

separately adjustable and the following functions (selectable by

means of rotary switch)

- Overcurrent monitoring

- Overcurrent monitoring with error memory

- Undercurrent monitoring

- Undercurrent monitoring with error memory

- Monitoring the window between Min and Max

- Monitoring the window between Min and Max with error memory

Connecting voltages

230 Vac, -15% ... +10% (galvanically separated)

100% duration of operation

Reference data

Selectron

EMR Article no.

EMR SI23O 1A 41230015

EMR SI23 P 5A 41230016

(Order data see chapter 1)

• ac current monitoring in 1-phase mains

• Measuring range 1A / 5A ac

• Multifunction

• Error Memory (Latch)

• 2 change-over contacts

Time ranges

Start-up suppression time: Adjustment range 0 ... 10 s

Tripping delay: Adjustment range 0.1 ... 10 s

EMR SI23O

EMR SI23P

Summary of content (7 pages)

PAGE 1
-phase current monitoring relay EMR SI23O, SI23P • ac current monitoring in 1-phase mains • Measuring range 1A / 5A ac • Multifunction • Error Memory (Latch) • 2 change-over contacts EMR SI23O Functions ac current monitoring in 1-phase mains with adjustable thresholds, timing for start-up suppression and tripping delay separately adjustable and the following functions (selectable by means of rotary switch) - Overcurrent monitoring - Overcurrent monitoring with error memory - Undercurrent monitoring - Un
PAGE 2
1-phase current monitoring relay EMR SI23O, SI23P Technical data Nominal voltage Nominal frequency Wave form ac Drop-out voltage Base accuracy Adjustment accuracy Repetition accuracy Temperature influence Frequency response Recovery time Measuring circuit: Input: 1 A / 5 A ac Overload capacity: 1 A ac 5 A ac Input resistance: 1 A ac 5 A ac Switching threshold: Max: Min: 8 VA / 1 W 48 ... 63 Hz sine >20% of the supply voltage ±5% (of maximum nominal value) ≤5% (of maximum nominal value) ≤2% ≤0.
PAGE 3
1-phase current monitoring relay EMR SI23O, SI23P Function description When the supply voltage U is applied, the output relays switch into onposition (yellow LED illuminated) and the set interval of the start-up suppression (START) begins (green LED U flashes). Changes of the measured current during this period do not affect the state of the output relay. After the interval has expired the green LED is illuminated steadily.
PAGE 4
1-phase current monitoring relay EMR SI23O, SI23P U LED U LED MAX LED MIN LATCH Max Min Start Delay Delay Delay Start illuminated). When the measured current falls below the value adjusted at the MIN-regulator, the set interval of the tripping delay (DELAY) begins again (red LED MIN flashes). After the interval has expired (red LED MIN illuminated), the output relays switch into off-position (yellow LED not illuminated).
PAGE 5
1-phase direct-current voltage monitoring relay EMR SU21I, SU21J, SU21K, SU21L • dc voltage monitoring in 1-phase mains • Measuring range 12/24/36/48 Vdc • Multifunction • 2 change-over contacts EMR SU21I Functions dc voltage monitoring in 1-phase mains with adjustable thresholds, and the following functions (selectable by means of rotary switch) - Undervoltage monitoring - Monitoring the window between Min and Max Indicators Green LED ON: Yellow LED ON/OFF: Red LED ON/OFF: indication of supply voltage
PAGE 6
1-phase direct-current voltage monitoring relay EMR SU21I, SU21J, SU21K, SU21L Technical data Nominal voltage Ripple at dc Drop-out voltage Base accuracy Adjustment accuracy Repetition accuracy Temperature influence Recovery time Measuring circuit: Measured variable Input: 12/24/36/48 Vdc Overload capacity: 12/24/36/48 Vdc Input resistance: 12/24/36/48 Vdc Switching threshold: Max: Min: 2W 10% according to switching threshold ±5% (of maximum nominal value) ±5% (of maximum nominal value) ≤2% (of maximum no
PAGE 7
1-phase direct-current voltage monitoring relay EMR SU21I, SU21J, SU21K, SU21L Function description For all the functions the LEDs MIN and MAX are flashing alternating, when the minimum value for the measured voltage was chosen to be greater than the maximum value. If a failure already exists when the device is activated, the output relays remain in off-position and the LED for the corresponding threshold is illuminated.