STW1K
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9 Trouble – shooting and remedies
Relay does not turn on:
check that the control voltage at terminals A1, A2 is correctly applied and corresponds to the
device voltage specified on the device's rating plate.
check that the current transformer is properly connected. The consumer must be turned on.
Verify that only one conductor is routed through the transmitter.
10 Technical data
Control voltage Us:
Refer to the unit rating plate
Tolerance
DC 21 - 30 V
AC -15 - +10%; 50/60 Hz
Power consumption
< 1.5 W
< 2 VA
Relay outputs K1, K2 (Alarm 1, 2)
1 switching contact
Switching voltage
max AC 415 V
Conventional thermal current Ith
max 6A
Switching capacity max AC cos φ = 1
2000 VA (resistive load) 120W at 24 V
DC
Electrical contact life cos φ = 1
1 x 10
5
switching cycles at 240 V / 6 A
Durability of mechanical contact
3 x 10
7
switching cycles
Short circuit resistance (NO)
Short circuit resistance (NC)
4 A slow action or LS switch
B4 3.15 A slow action
Shutdown capability
Category
AC-15 Ie = 3 A Ue = 250 V
Rated operational current
Rated operational voltage
DC-13 Ie = 2 A Ue = 24 V
Reduction factor for cos φ = 0.3
0.5
Transformer connection
Connection transformers
1 … 8 pcs Type STWA1 or STWA1H
Alternating current - internal resistance
approx. 7kΩ
Transformer overload capacity
max 100A continuous, max 300 A for 10 s
Switching points
Switching value
app. AC 1 A
Activation delay
< 200 ms
Switch-off delay
See nameplate (without < 200 ms)
Testing conditions
EN 61010-1
Rated withstand voltage
4000V
Overvoltage category
III
Degree of contamination
2
Rated insulation voltage Ui
250V
On-time
100%
EMC tests
EN 61326-1
Interference emission
EN 61326-1; CISPR 11 Class B
Interference immunity
EN 61326-1 (industrial environment)
